(This is for native storage but I’m bored and want to contribute)
I do the genre thing. I’ll simplify them first. Like I have-
1 big one for Ska.
1 for first wave ska.
1 for second wave.
1 for 3rd.
No reggae, thats 1st wave. Same with rocksteady, dub, dance hall, etc.
Metal is all metal. No crossover or Nü.
I do separate Punk and Skate Punk though, the latter being the old Thrasher Mag Skate Rock tapes.
Rock is a mess but everything from AcDc to Pusa. Hip-hop is anything that even could be considered rap.
EDM is the same.
Just super broad strokes. Then a playlist is either a genre or two or the entire catalog of a few bands. Occasionally, if I get super motivated, I’ll do a playlist with albums, but rarely any more specific than that unless I need something particular- Like one for running, or a game session.