I mean, I hate most of the goddamn DJs too. The XPN DJs are pretty tolerable because they tend to talk about the history behind the songs and the artists, not themselves, and focus mostly on the music, and the KHS one are tolerable because they are so clearly still learning and it's adorable, but luckily I can put together a good set of presets where the music stations mostly are just "play song, explain, repeat."

Are you thinking about music-based podcasts? I've gone looking for them and they're surprisingly hard to find - most of them, in fact, seem to have started as public radio shows. I have listened to a lot of Tapestry of the Times, which is folk music from around the world, and also a lot of Queer Music Heritage, but other than that I haven't had much luck, and a lot of what does come up in my podcast app seems to be not in English. Maybe music podcasters are kept off the main podcast search engines for some copyright reasons? They must be out there somewhere. Or maybe all the people who would be dj-ing music podcasts are just doing Spotify playlists instead.