A lot of places locally have peer supporter trainings so that you can help run support groups and other services for people who have similar lived experiences (and diagnoses) to your own. So resources will depend on geographic area and your own mental health history.
Co-counseling a.k.a. Re-Evaluation Counseling is a thing that exists in most major U.S. cities but has virtually no online presence and is by invitation only. People work in pairs, counseling each other one-on-one then swapping roles. The style of counseling is client-lead. There are associated workshops, classes, etc. in some places. The creator has been accused of being a Marxist and is very much pro liberation of various oppressions (yay). But on the other hand, he has also been accused of sexually taking advantage of many women (according to some random website) and the org has been accused of being rather cult-like. They discourage any major press coverage and take the invite-only system pretty seriously. But on the other other hand, "cult" is often a term used as a political weapon against folks with beliefs that are threatening to the mainstream. I have absolutely no clue as to the quality of the org as it currently exists, but I find the model intriguing. There is a book about it on Amazon that might be worth getting for inspiration's sake? I have it on my reading list.
I tend to think that groups are maybe the better way to go for the purpose you intend though.