The best of modern rock/metal these days is mostly underground or indie, with a few mainstream exceptions (the ones that haven't started phoning it in or gotten
yet, at least).
Got put on to this band by chance thanks to a music reviewer on YouTube:
This band stars Tosin Abasi, a Black guitarist that many think is the best guitar player alive right now:
I think rap music is going through a "corporate" phase, in a sense, similar to rock music in the late nineties with the death of grunge and the rise of pop punk.
When rock was at its peak in the early eighties, generic hair metal bands like Motley Crue were more popular, but thrash metal bands like Metallica (who were mostly underground prior to '86) blew them away in terms of musicianship.
When a genre becomes the de facto soundtrack for a generation, record labels latch onto it like a leech and drain the life out of it until becomes a hollow shell of its former self, which explains why rap is in the state that it's in now, among other factors.
Now that rock is no longer America's #1 genre, there's been a revival of experimentation and skill among newer bands.