It's probably not Elementalist, or at the very least, I don't think it will be called that. In French, that's what they decided to go for to translate Conjurer back in 1.0, and it's still a thing, unfortunately.
Granted, the french translation also took some liberties (Astrologian -> Astromancian, Gunbreaker -> Gunsaber).

I'm getting the idea that this is either Green Mage (which would be a bit of an awkward name in FFXIV considering its a DPS, but I guess blue mage kinda broke that down somewhat) or Geomancer.