Hello! I don't know if this is unisex enough for you (that term is relative I guess I mean they're geckos after all they don't really have gender roles haha) but since your other is named yoshi, maybe something like Peach would be cute? If not, I've got some other suggestions that are a bit more objectively neutral... Atlas, Ezra, Frank (or Frankie), Archer, Emery, River, August, Ace, Casper, and Arden... Let me know iif any of those stick! Very cute baby, congrats on your new addition!