I've tried them out. So far:

- all seem to support only Alby, I don't have Alby account, except for Podverse, which wants web-ln browser extension (probably better, but I still don't use it).

- PodcastGuru has not updated episode of my podcast since August. All other players see the new episodes, this one does not

Do any of these support a different model than Web-ln / Alby? What I like about fountain is that users can immediately begin.

On the plus side - wow, so many apps!