What are the ascians true names?

[dustdjinn]

Gaia isn't a Goddess. She's a Titan, the progenitor race of the Gods.

I would argue that you are nitpicking.

" Gaia was the mother of all: the heavenly gods, the Titans and the Giants were born from her union with Uranus (the sky), while the sea-gods were born from her union with Pontus (the sea). The Greek word "γαῖα" (transliterated as gaia or gaea) is a collateral form of "γῆ" meaning Earth. Her equivalent in the Roman pantheon was named Gaea (Terra in more ancient documents). This is alluded to in Final Fantasy IX with the existence of Gaia's twin world."

that sounds like a god of sorts to me personally.