diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/application-3d/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/application-3d/wizard.json
index cd1b310c711..9d60367997a 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/application-3d/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/application-3d/wizard.json
@@ -17,21 +17,23 @@
         { "key": "ProjectPluginName", "value": "%{ProjectName}plugin" },
         { "key": "ProjectPluginClassName", "value": "%{ProjectName}Plugin" },
         { "key": "QmlProjectFileName", "value": "%{JS: Util.fileName('%{ProjectName}', 'qmlproject')}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
         { "key": "UIClassName", "value": "Screen01" },
         { "key": "UIClassFileName", "value": "%{JS: Util.fileName('%{UIClassName}', 'ui.qml')}" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboardDefault", "value": "%{JS: false}" },
         { "key": "QtQuick3DVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuick3DVersion}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":
diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/application/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/application/wizard.json
index 51acc18af26..3e7ef11beb7 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/application/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/application/wizard.json
@@ -20,20 +20,20 @@
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
         { "key": "UIClassName", "value": "Screen01" },
         { "key": "UIClassFileName", "value": "%{JS: Util.fileName('%{UIClassName}', 'ui.qml')}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
         { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
         { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: value('QtQuickVersion') === '' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboardDefault", "value": "%{JS: false}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "DefaultStyle", "value": "%{JS: value('QtQuickVersion') === '' ? 'Basic' : 'Default'}" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "DefaultStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? 'Basic' : 'Default'}" },
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":
diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/desktop-launcher/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/desktop-launcher/wizard.json
index f687b2ce385..20a3baba9c7 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/desktop-launcher/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/desktop-launcher/wizard.json
@@ -20,17 +20,19 @@
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
         { "key": "UIClassName", "value": "Screen01" },
         { "key": "UIClassFileName", "value": "%{JS: Util.fileName('%{UIClassName}', 'ui.qml')}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboardDefault", "value": "%{JS: false}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":
@@ -235,7 +237,6 @@
                     "data":
                     {
                         "index": 1,
-                        "items":
                         "items":
                             [
                             {
diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-scroll/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-scroll/wizard.json
index d12fc38bdc4..3117c7e0544 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-scroll/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-scroll/wizard.json
@@ -18,19 +18,19 @@
         { "key": "ProjectPluginClassName", "value": "%{ProjectName}Plugin" },
         { "key": "QmlProjectFileName", "value": "%{JS: Util.fileName('%{ProjectName}', 'qmlproject')}" },
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
-        { "key": "UIClassName", "value": "Screen01" },
-        { "key": "UIClassFileName", "value": "%{JS: Util.fileName('%{UIClassName}', 'ui.qml')}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboard", "value": "%{JS: false}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":
diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-stack/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-stack/wizard.json
index 1b76c290359..cb083e84f4b 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-stack/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-stack/wizard.json
@@ -18,17 +18,19 @@
         { "key": "ProjectPluginClassName", "value": "%{ProjectName}Plugin" },
         { "key": "QmlProjectFileName", "value": "%{JS: Util.fileName('%{ProjectName}', 'qmlproject')}" },
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboard", "value": "%{JS: false}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":
diff --git a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-swipe/wizard.json b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-swipe/wizard.json
index 19e5865fb83..1c1137afddb 100644
--- a/share/qtcreator/qmldesigner/studio_templates/projects/mobile-swipe/wizard.json
+++ b/share/qtcreator/qmldesigner/studio_templates/projects/mobile-swipe/wizard.json
@@ -18,17 +18,19 @@
         { "key": "ProjectPluginClassName", "value": "%{ProjectName}Plugin" },
         { "key": "QmlProjectFileName", "value": "%{JS: Util.fileName('%{ProjectName}', 'qmlproject')}" },
         { "key": "ImportModuleName", "value": "%{ProjectName}" },
+        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') !== '2.15' }" },
         { "key": "QtQuickVersion", "value": "%{JS: %{TargetQtVersion}.TargetQuickVersion}" },
         { "key": "QtQuickFeature", "value": "QtSupport.Wizards.FeatureQtQuick.%{QtQuickVersion}" },
-        { "key": "QtQuickControlsStyle", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt5", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyle}" },
+        { "key": "QtQuickControlsStyleInternalQt6", "value": "%{JS: value('QtQuickControlsStyleInternalQt5') === 'Default' ? 'Basic' : value('QtQuickControlsStyleInternalQt5')}" },
+        { "key": "QtQuickControlsStyle", "value": "%{JS: value('IsQt6Project') === 'true' ? value('QtQuickControlsStyleInternalQt6') : value('QtQuickControlsStyleInternalQt5')}" },
         { "key": "QtQuickControlsStyleTheme", "value": "%{JS: %{ControlsStyle}.QtQuickControlsStyleTheme}" },
-        { "key": "ApplicationImport", "value": "%{JS: value('QtQuickVersion') === '' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
+        { "key": "ApplicationImport", "value": "%{JS: value('IsQt6Project') === 'true' ? '%{ImportModuleName}' : '%{ImportModuleName} 1.0'}" },
         { "key": "UseStandardResolution", "value": "%{JS: value('CustomScreenWidth') === '' || value('CustomScreenHeight') === ''}" },
         { "key": "ScreenWidth", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenWidth : value('CustomScreenWidth')}" },
         { "key": "ScreenHeight", "value": "%{JS: value('UseStandardResolution') === 'true' ? %{ScreenFactor}.ScreenHeight : value('CustomScreenHeight')}" },
         { "key": "UseVirtualKeyboard", "value": "%{JS: false}" },
-        { "key": "IsQt6Project", "value": "%{JS: value('QtQuickVersion') === '' }" },
-        { "key": "ImportModuleVersion", "value": "%{JS: value('QtQuickVersion') === '' ? '' : '1.0'}" }
+        { "key": "ImportModuleVersion", "value": "%{JS: value('IsQt6Project') === 'true' ? '' : '1.0'}" }
     ],
 
     "pages":