“There’s multiple original versions”/“it’s debatable which versions are actually the originals”.
Aside fron sound mix variations and the addition of “Episode IV: A New Hope”, I’m not aware of any pre-1997 variations.
https://starwars.fandom.com/wiki/List_of_changes_in_Star_Wars_re-releases#A_New_Hope
and also the elusive 70mm version of ESB