I have about 150 registrations for my memorized core songs that I choose by auditioning the styles and OTS,where available. Some of them are derived from like registrations for other songs,with perhaps different instruments. The danger in stereotyping styles too much,is that you could be missing a song specific style eg,that would be a better fit. For that reason,I am constantly tweaking regs as I perform them. I suppose that if I were more technically inclined,I might create some of my own,but I haven't,except MIDI conversions. After the 150 are done,I sometimes go to youtube to get a rough idea,if it is a less familiar song,and search for a like style.

I do this with all my keyboards.