I did a post about this a while back but here we go
G Funk- Warren G types
Modern West Gangsta music- YG, Schoolboy Q
Trillphonk- Freddie Dredd, Oneandonly, Xavier Wulf
Ambient Trip Hop- Bones, Yung Lean
Nerd Rap aka lyrical miracle - Lupe Fiasco, Aesop Rock
Rage music- Playboi Carti, Yeat, Destroy Lonely
Mainstream Rage- Travis Scott, Lil Uzi Vert
Underground/SoundCloud rap- XXXTentcion, Summrs, ThouxFani
Boom Bap- Wu Tang,
Modern Boom Bap (no drums)- Griselda, Body James
S.T.H. (scaring the hoes music meaning abstract shit) - MIKE, Earl Sweatshirt, Jpegmafia, Ka
Slime music- Young Thug, Lil Keed, Gonna, Roddy Rich
Melodic Trap- Rod Wave, lil Baby, Rlyo Rodriguez, NBA Youngboy
Hustle music- Currensy, Larry June, Payroll
City girl music- Saucy Santana, Meg Thee Stallion, City Girls, etc.
City boys music aka pop music for pretty niggas - Future, Tyga, etc.
There is also horror core, Memphis music, Florida jit music, scam rap, Detroit music, hyphy Bay area, Milwaukee music with them consistent claps lol, etc.
There are sooooooo many sub genres which is why I never understand why folks on here be wanting everything to be the same or sound a way.