I asked if anyone has first hand experience with the organizations above on the https://opensourcediversity.org/ Signal group. It is difficult to know if they would be a good fit for fedeproxy just by reading their web site.
They seem to be very focused on Code of Conduct enforcement, in the context of large projects. Not so much for really small projects like fedeproxy. They come recommended and that may be helpful when/if fedeproxy grows:
Q: would you recommend them?
A: Yes, we ([redacted] Code of Conduct team) have done some Incident Report Workshops before our conferences and was very helpful.