Uh... X Men? I guess? I honestly don't know enough about either superhero team, but the X-Men seem pretty cool, and more like they have actual team dynamics/plots which I like whereas the Avengers are more "let's stick a bunch of separate superheroes together because that sounds cool".
A hero team mashup of fantasy heroes: Gandalf, Arya Stark, Kvothe, Archmage Ged, and Puddleglum
Or one of sci-fi heroes: the 13th Doctor, Captain Picard, Luke Skywalker, River Tam, and Marvin