Thanks, @steveh. This was interesting. I listened to two HarkLists and on one of them, I was intrigued enough by one clip to listen to the whole episode. It was a podcast I’d heard of but never subscribed to or sampled.
It looks like one can subscribe to podcasts inside the Hark app, but I didn’t see a way to import, say, your RSS feed. On my phone I can import from Spotify or browse and subscribe one by one.