This might be helpful:

https://podcasting2.org/podcasters

https://guides.getalby.com/user-guide/value-for-value-podcaster-guide/6.-how-to-prepare-an-rss-feed-to-receive-value-for-value-payments

RSS, RSS Blue, JustCast, Cowlabs, blubrry, podcast guru are all podcasting 2.0 service providers