The multiple signatures suffer from the problem that many are reported as error, because one larger type is evaluated before another type. An Example: PySide6.QtCore.QCborSimpleType is shadowed by int when int is listed first. That is due to the mro: int.mro() [<class 'int'>, <class 'object'>] QCborSimpleType.mro() [<enum 'QCborSimpleType'>, <enum 'IntEnum'>, <class 'int'>, <enum 'ReprEnum'>, <enum 'Enum'>, <class 'object'>] We are implementing a topological sort by mro length that puts the list into the right order. Result is from 226 down to 30. Change-Id: I155e2169c3c8ab4afd5b7bb8f3411ccf6467d440 Task-number: PYSIDE-2846 Fixes: PYSIDE-2687 Fixes: PYSIDE-2886 Pick-to: 6.8 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>