Predictions for job(s) in the next expansion?

[Payadopa]

I feel like the lore and hints are leaning to a Chemist healer and a Geomancer magic dps. Guess we'll know in February.

I get CHM, but where does GEM come from? The AST story? If so then that was like two expansions ago. And aren't GEMs healer too? At least that's what I vaguely remember from the story.