Imma start a thread of underground hip-hop and anything related. I'll start with some 1773 from Chicago:
These homies are smooth with it making that Soulquarian style neo-soulful jazzy hip-hop. These homies motivated me during college, it was the path I wanted to take in hip-hop as a producer.
https://youtu.be/Jz6iJYK1MAo?si=DDZe9uD1qfGHZ0_H
Puerto Rico's own obscure alternative hip-hop scene, with Velcro the MC, I personally call him the savior of tasteful soulful hip-hop in Puerto Rico. That's right, PR has artists that make more than just reggaeton and underground hardcore hip-hop.
Here's my fav live band hip-hop almost ever, right up there with The Roots, Miami's own Artofficial is not to be slept on.