Perhaps they didn't fit a search criteria? Got examples we can see?
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