I listen to some newer stuff, here is some of what comes up on my playlist most often for newer stuff: SOBxRBE (and Yhung TOs solo stuff), Nef the Pharaoh, Lil Pete, Shoreline Mafia, Kodak Black, Tee Grizzley.
I'll just throw in some of the other stuff talked about in this thread here just to make it more concise. A couple favorite 'underground' artists from years past: Extended Famm (tonedeff) and Atmosphere.
I don't know if I'm the only one, but I really really enjoy Tribes newer album from 2016. My sister gifted me that vinyl and I spin it quite a bit, lot of good songs in there that are nice to listen to on the porch while drinking some drinks on a nice summer evening.