I'll echo everyone else and say Black Mage.

I've been leveling mine over the past week and it's pretty dang fun. I'm currently L65 and it's a blast. By L60 you have access to the majority of your "everyday rotation" mechanics so you can flesh out and get used to your normal rotation. Then as you/we get higher we unlock the hard hitting Foul and Xenohlossy which acts as your "every 30 sec nuke" attack, and a passive fire 1 upgrade. (I say passive because it'll always activate as long as you're doing your normal rotation properly.)

Like I said, I've been having a blast on mine. It feels like a traditional mage from any other game (glass cannon turret) so if you're into that I suggest giving it a try.

(Although all the jobs you've mentioned you have leveled are all pretty mobile, so a turret class might feel slow/ boring to you)