Omniversal(?) travel

Hi, I am confused about one thing. How do you call ability that allows one to travel to MAXIMUM number of universes, e.g. beetwen DC, specific book's universes, baseline Earth, etc.? What are examples of characters that can travel as above?

I have been looking up multiversal travel, dimensional travel, planeswalking, etc.., but they all seem to refer to an ability to travel WITHIN a certain variants of one universe, e.g. only different variants of Marvel. I am looking for something with broader scope.