So what should the Ruvoka be?
Originally they appeared in the Dark Sun Monstrous Compendium as tribes of Athasian clerics who adapted to the elelmental planes. And then again as descendents of a prime from Athas who was granted immortality and power based on the inner planes from an Efreeti lord.
So for the most part they're a bunch of former-humans with immortality and an essence with powers tied to the planes themselves. So I guess the question is, are they depicted as unique races, or simply just Half-Elementals or Genasi for the editions beyond 2e?
Do you mean "are they", or "how should they be"? Because so far as I'm aware, the Ruvoka haven't shown up in any official stuff since 2e, so there is no real answer to the former question.