So please tell me if there are any holes in it!
As you probably know, Patrick Stewart aka Professor X will appear. My theory is that there is a Peter Parker/Spiderman in the xmen universe, just not very popular or famous due to the fact that mutants are common. However, Charles Xavier, being a powerful telepath, knows about this, and his secret identity, leading him to be pulled into the mcu in NWH. For the same reason that Vulture was sent into Morbius's universe, X was left behind in the MCU. What do you guys think?