So basically this is a possible class tree I fashioned out of SRPG Studio’s RTP (default) classes. It is made assuming the user is not adding any new classes or importing any new animations.
The first sheet (Class List) is a list of class data and my personal recommendations for promotions.
The second sheet (Class Tree) is a small class tree formed from every class that can promote to/from another.
It’s meant to be kind of a quick start thing. The RTP classes admittedly don’t give you much to work with, but hopefully this will help you make the best of what you’ve got.