Correia is perfect for Gina. Nunes would maul Gina. Carmouche, Davis would all beat Gina too imo. Especially given Gina's looooong hiatus.
Correia or Tate would be decent enough fights for Gina.
I think you are jumping to conclusions, The only person to beat her was a roided out Cristiane Santos. I would take Gina over everyone not named Cyborg or Rousey.
Her striking skills are still top of the food chain and I dont think anyone you mentioned can hang with her standing.
"I fear no man, but Jim Harrison and Mike Stone are the two last men that I would wish to meet in an alley fight. Jim Harrison's fighting style is not flamboyant or spectacular, it's just simple and deadly!" - Bruce Lee sakurabushidokan.homestead.com