Coming up with ideas for new classes is literally the most fun part out of all the parts of RPG design. Why the hell would you leave something like that up to other people to do instead?!
Also shouldn't there be a final-fantasy wikipedia out there that lists every single job class they have ever used in any Final Fantasy game and just go through even more of those for your job ideas?
Here are a few of the ones that you have not yet listed: Monk, Dragoon, Mediator, Green Mage, Time Mage, Ninja, Samurai. I'm sure there are more, but the only final fantasy with job classes I can remember off the top of my head is FFT, and even so I'm pretty sure I haven't listed all of those even. Also I didn't have the time to list various ways of how you could teach those classes their abilities, but I can leave those up to other people visiting this topic.