I love https://ambiph.one, which I discovered on HN. Particularly things like "coffee shop", "jungle", "stream", "ambient radio", "lo-fi beats radio" and so on.
The problem for me is that they're maybe a few hours, then they loop. "Coffee shop" seems to loop within an hour. I'm happy to pay, even monthly, for a service that has these things but goes 50+ hours without looping. I know of SomaFM and others that can replace the "ambient/lo-fi beats radio", but that doesn't really work for the others.