diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h
index d599f2582e0..15f72927f83 100644
--- a/src/corelib/kernel/qmetatype.h
+++ b/src/corelib/kernel/qmetatype.h
@@ -1305,16 +1305,6 @@ QT_FOR_EACH_STATIC_WIDGETS_CLASS(QT_FORWARD_DECLARE_STATIC_TYPES_ITER)
 
 #undef QT_FORWARD_DECLARE_STATIC_TYPES_ITER
 
-typedef QList<QVariant> QVariantList;
-typedef QMap<QString, QVariant> QVariantMap;
-typedef QHash<QString, QVariant> QVariantHash;
-typedef QPair<QVariant, QVariant> QVariantPair;
-#ifdef Q_CLANG_QDOC
-class QByteArrayList;
-#else
-using QByteArrayList = QList<QByteArray>;
-#endif
-
 #define Q_DECLARE_METATYPE_TEMPLATE_1ARG(SINGLE_ARG_TEMPLATE) \
 QT_BEGIN_NAMESPACE \
 template <typename T> \
diff --git a/src/corelib/serialization/qcbormap.h b/src/corelib/serialization/qcbormap.h
index 4c0a31c8349..97d7d301330 100644
--- a/src/corelib/serialization/qcbormap.h
+++ b/src/corelib/serialization/qcbormap.h
@@ -47,10 +47,6 @@
 
 QT_BEGIN_NAMESPACE
 
-template <class Key, class T> class QMap;
-typedef QMap<QString, QVariant> QVariantMap;
-template <class Key, class T> class QHash;
-typedef QHash<QString, QVariant> QVariantHash;
 class QJsonObject;
 class QDataStream;
 
diff --git a/src/corelib/serialization/qjsonobject.h b/src/corelib/serialization/qjsonobject.h
index 2d786e36651..1e6cc652277 100644
--- a/src/corelib/serialization/qjsonobject.h
+++ b/src/corelib/serialization/qjsonobject.h
@@ -49,10 +49,6 @@
 QT_BEGIN_NAMESPACE
 
 class QDebug;
-template <class Key, class T> class QMap;
-typedef QMap<QString, QVariant> QVariantMap;
-template <class Key, class T> class QHash;
-typedef QHash<QString, QVariant> QVariantHash;
 
 class QCborContainerPrivate;
 
diff --git a/src/corelib/tools/qcontainerfwd.h b/src/corelib/tools/qcontainerfwd.h
index b9a50e4d60e..96480c4a8a6 100644
--- a/src/corelib/tools/qcontainerfwd.h
+++ b/src/corelib/tools/qcontainerfwd.h
@@ -48,18 +48,18 @@
 
 QT_BEGIN_NAMESPACE
 
-template <class Key, class T> class QCache;
-template <class Key, class T> class QHash;
-template <class Key, class T> class QMap;
-template <class Key, class T> class QMultiHash;
-template <class Key, class T> class QMultiMap;
+template <typename Key, typename T> class QCache;
+template <typename Key, typename T> class QHash;
+template <typename Key, typename T> class QMap;
+template <typename Key, typename T> class QMultiHash;
+template <typename Key, typename T> class QMultiMap;
 template <typename T1, typename T2>
 using QPair = std::pair<T1, T2>;
-template <class T> class QQueue;
-template <class T> class QSet;
-template <class T> class QStack;
-template<class T, qsizetype Prealloc = 256> class QVarLengthArray;
-template <class T> class QList;
+template <typename T> class QQueue;
+template <typename T> class QSet;
+template <typename T> class QStack;
+template <typename T, qsizetype Prealloc = 256> class QVarLengthArray;
+template <typename T> class QList;
 #ifndef Q_CLANG_QDOC
 template<typename T> using QVector = QList<T>;
 using QStringList = QList<QString>;
@@ -72,6 +72,11 @@ class QByteArrayList;
 class QMetaType;
 class QVariant;
 
+using QVariantList = QList<QVariant>;
+using QVariantMap = QMap<QString, QVariant>;
+using QVariantHash = QHash<QString, QVariant>;
+using QVariantPair = QPair<QVariant, QVariant>;
+
 QT_END_NAMESPACE
 
 #endif // QCONTAINERFWD_H
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h
index 2ac6920cc38..cee58a0f2f9 100644
--- a/src/corelib/tools/qhash.h
+++ b/src/corelib/tools/qhash.h
@@ -691,7 +691,7 @@ struct iterator {
 
 } // namespace QHashPrivate
 
-template <class Key, class T>
+template <typename Key, typename T>
 class QHash
 {
     using Node = QHashPrivate::Node<Key, T>;
@@ -1136,7 +1136,7 @@ public:
 
 
 
-template <class Key, class T>
+template <typename Key, typename T>
 class QMultiHash
 {
     using Node = QHashPrivate::MultiNode<Key, T>;
diff --git a/src/gui/kernel/qwindowdefs.h b/src/gui/kernel/qwindowdefs.h
index 172cc593d1c..1ac245900ec 100644
--- a/src/gui/kernel/qwindowdefs.h
+++ b/src/gui/kernel/qwindowdefs.h
@@ -101,10 +101,7 @@ typedef QT_PREPEND_NAMESPACE(quintptr) WId;
 
 QT_BEGIN_NAMESPACE
 
-template<class K, class V> class QHash;
 typedef QHash<WId, QWidget *> QWidgetMapper;
-
-template<class V> class QSet;
 typedef QSet<QWidget *> QWidgetSet;
 
 QT_END_NAMESPACE