I go in spurts & have been listening to Hober more lately. My favorite live365 presets are on:
Carolina Bluegrass -- bluegrass, folk, Celtic and non-Nashville country.

'Sugar in the Gourd' Old Time Country (pre-Bluegrass): Appalachian / String ... [Editor's pick]

OzarkMountainAirWaves-BlueGrass Music [Editor's pick]

Appalachian Old Time Throwdown

There are several Smithsonian Folkways stations.