I'll post research on what each class "means" as I feel like it. Here's the basic classes from Pathfinder to get us started. I'll probably add other classes from Final Fantasy and such later. Obviously keep in mind that these are game mechanics first and foremost, so we can't expect to find anything meaningful without extra digging. Skipping the "occult classes" unless somebody wants to do them, because they seem really niche and samey.