Comics organizations similar to or like X-Men

The X-Men are a team of mutant superheroes, published in comic books by Marvel Comics. Over the decades, the X-Men have featured a rotating line up composed of many characters. Wikipedia

Fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. The character debuted in Avengers Annual #10 (1981) as a villain, but she joined the X-Men soon thereafter. Wikipedia

Fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Created by writer Len Wein and artist Dave Cockrum, he debuted in the comic book Giant-Size X-Men #1 (May 1975). Wikipedia

American comic book series published by Marvel Comics since 1963, and is the longest-running series in the X-Men comics franchise. It features a team of superheroes called the X-Men, a group of mutants with superhuman abilities led and taught by Professor X. Wikipedia

Fictional superhero appearing in American comic books published by Marvel Comics and is a founding member of the X-Men. Created by writer Stan Lee and artist/co-writer Jack Kirby, the character first appeared in The X-Men #1 (September 1963). Wikipedia

Fictional character appearing in American comic books published by Marvel Comics and is a founding member of the X-Men. Created by writer Stan Lee and artist/co-writer Jack Kirby, the character first appeared in the comic book The X-Men. Wikipedia