I am going to be doing some Marvel stories in the future and I just wanted to clarify this before I do. All of the MCU takes place in a different multiverse than the one of the comics, hence why multiverse-affecting events in the comics do not affect the MCU and vice versa. In the MCU Multiverse the main timeline is 616, the one where all of endgame and the other movies takes place. In the same multiverse is earth 833, where mysterio comes from and 838, where the Illuminati were(before Wanda killed them.