Is ninja confirmed the only new job?

[Alphras]

Except that two of those damage sources barely get used in normal content. The vast majority of the time, SMN should be using Garuda. So unless you're talking about auto-attack damage, I don't see much reason to count the other two.

It does not matter that Ifrift is not used in most of the content. The point is, that Square already decided to mix multiple damage types in one class and that there is no reason why they wouldn't do it with other classes.