User blog comment:Darbicus/X-Men 11584/@comment-34587889-20190515024253

As far as I know about Earth-11584, Mutants aren't known to the public or even an actual concept in the continuity yet. I'm not sure if they're just hidden or if they're going to be "created" through some sort of event. Either way, I'd personally recommend you start with the original team from the Ultimate comics. Cyclops, Storm, Wolverine, Nightcrawler, Angel, Colossus, Jean Grey, Iceman and Rogue. I'd say that's a pretty colorful cast of classic characters who can cover a large diverse group of ages and abilities.

The thing I especially like about the Ultimate team is that they can work as both a seasoned team or a first class depending on which direction you decide to take the story. As for casting, I'm not entirely sure either. :/

If all else fails you can always take the casting from the upcoming Eternals and Black Widow movies and just rework them into X-Men. That's what I'm probably going to do for my personal MCU when I get up to Phase 4. David Harbour is already unofficially casted as Sabertooth in Deadpool 3 actually. lol