I get the OP meant the FE part as a joke but it's still worth noting the clones for FE characters is only 4, Marth, Lucina, Roy, and Chrom (Lucina is officially Marth's echo and Chrom is officially Roy's echo, and while Roy does share Marth's basic moveset they made him focus more on power while Marth is more about speed which is a thing ever since Melee, so this sorta grandfathered Roy into his own character slot). Robin, Corrin, Byleth, and Ike either have their own original movesets or enough significant differences from the previously mentioned characters that calling them a clone would be a real stretch.

Yes. That is the joke. Roy doesn’t even share that many moves with Marth anymore since they reworked him for Smash 4, putting him closer to the likes of Isabelle or Toon Link (similar specials and a few normals, unique other normals and animations).

It’s just because people like to rag on “all FE is the same” when FighterZ literally has 8 Goku’s, Goku’s identical father, and Goku as part of an evil fusion.