Form 990 for these organizations mentions many names I am not familiar with such as Tyler Emerson. Many people in these spaces have romantic or housing partnerships with each other, and many attend meetups and cons together. A MIRI staffer claims that Peter Thiel funded them from 2005 to 2009, we now know when Jeffrey Epstein donated. Publishing such a thing is not very nice since these are living persons frequently accused of questionable behavior which never goes to court (and some may have left the movement), but does a concise list of dates, places, and known connections exist?
Maybe that social graph would be more of a dot. So many of these people date each other and serve on each other’s boards and live in the SF Bay Area, Austin TX, the NYC area, or Oxford, England. On the enshittified site people talk about their Twitter and Tumblr connections.
Kelsey Piper has an up-to-date RationalWiki page including how she connected with SBF (she was on the board of an Effective Altruism club with Caroline Ellison at Stanford)
There was a creepy time when all the ex-Scienceblogs / Atheism Plus / Skeptic circle of bloggers posted an angry post about the enemy of the day. That was not at all what I understood as skepticism or free thinking, but they had already discovered that original, independent, research-based posts are hard and repeating the party line about what someone said on the Internet is easy. So is beefing with a friend who had the wrong take about what someone said on the Internet.
I must have confused my memories of the really nasty era around 2010-2012 with my occasional checks on FreeThoughtBlogs afterwards. I have not really thought about that world in the COVID era.