I’ve just been listening to a lot of college radio recently, trying to distance myself from Spotify - there’s some great stations with really good programming.
Some faves in no particular order:
91.7 WICB (Ithaca College - linked above)
88.9 WERS (Emerson College)
91.1 WMUA (UMass Amherst)
88.1 WKNC (North Carolina State University)
90.3 KEXP (operated by an affiliate of the University of Washington)