A few I'm aware of:

https://www.patreon.com/Wildbow $6000/month

https://www.patreon.com/SelkieMyth $6500/month

https://www.patreon.com/Magic_Smithing $10,000/month

https://www.patreon.com/Shirtaloon $17,000/month

https://www.patreon.com/pirateaba 4300 patrons with no $ listed but I've heard it's well over $10,000/month

Thank you!!!! This is very helpful. Looks like they aren't tagged as fiction which is why I couldn't find them. I'll definitely dig into these as some amazing case studies!

Graphtreon records all pledges [1]

[1] https://graphtreon.com/top-patreon-creators/writing