Now that's a fun rabbit hole to go down.
Look out Jaxxon!
Star Hoppers (Marvel/Lucas' first expanded U tale), was a reworking of Magnificent Seven as a western in space, which in turn was a Western reworking of Seven Samurai.
And then there was Battle Beyond the Stars!
Serji-X Arrogantus was Eli Wallach's Calvera redesigned as comic artist Sergio Arragones.
Further Galaxy Quest was a reworking of Magnificent Seven if they were actors mistaken for real Space heroes, which was somewhat a reworking of Three Amigos which is what if Magnificent Seven where three actors mistaken for three real Caballeros.
And then A Bugs Life, which is the same story if they were all bugs...