Film and television world starts from Meiman

Came to a new world, soon confirmed that this is Marvel film universe, and gradually found that it is far more than that in this world, there are also wizards and witches in the magical world of Harry Potter. What is the difference between them and the witches in the American fear story? What level of mana can they rank in front of the Scarlet Witch there are also the blood clan and monsters in the spirit hotel. Who is the ancestor of Dracula and the Michelson family in the early blood clan? What do blade soldiers think of them and... they are all under the same worldview, on the same timeline, at least before someone messes up the sacred timeline.