You sound like you know what's up musically. To expand on my comments about using Real Band, I have a directory with several dozen midi files I've found on the web that overall suck but they have one or two tracks that really cook like a good latin percussion midi track or a good melody track or whatever. You can mix and match things in RB from different sources.
Have you heard Carlos Arellano's home made Santana demo "Latin Cowboy" in the thread just down from this one? If you haven't, check it out. I also posted one a year or so ago that I did from a midi file called Mambo For Trajid where I used 3 different Real Drum tracks along with the original midi drums plus 2 or 3 original midi instrument parts plus me playing live synth and piano. In addition to all that, RB will create individual Biab parts either midi or RT's using a different style for each if you want that. You can do a lot with Real Band once you get into it.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.