So I'm fairly sure (and sad) that the female miqo'te is the healer set. She looks like the WHM idle pose.
The elezen on the far right looks like the DRG idle pose
Most likely, that means the lalafell set is the caster set. (Healer and caster sets seem to always be re-colors of each other).
Edit: According to people who can read Japanese, this famitsu article names and lists which is which.
http://www.famitsu.com/news/201510/22090973.html
Supposedly, Caster, Tank, NIN, DRG, Heals, MNK, Ranged (wtf)
The elezen on the far right looks like the DRG idle pose
Most likely, that means the lalafell set is the caster set. (Healer and caster sets seem to always be re-colors of each other).
Edit: According to people who can read Japanese, this famitsu article names and lists which is which.
http://www.famitsu.com/news/201510/22090973.html
Supposedly, Caster, Tank, NIN, DRG, Heals, MNK, Ranged (wtf)