I’ve had a hard time getting into Aesop Rock, but he comes up so often I should try again.
I have enjoyed most Busdriver that I’ve heard, but I admit I often have to look up his lyrics to understand them, and it’s probably discouraged me from exploring his catalog more than I have. My fave that I’ve heard of his is Much, partially because he slows it down a bit.
Digable Planets - I only knew them for The Rebirth of Slick for decades. Took a deeper look a couple years ago and was blown away. They are high on my list now. Love their sound. Good recommendation there!