Some were, but really more like 2-5 depending on how you define "part of" (mod, active poster or registed member).
The concept of "the" SW satellite is a relatively recent invention. While Desperance, Polaris, Shadow Vale and Calamity Refuge are the most memorable and long-lived satellites, only the latter two were the only ones in their time, and none of them were ever recognized on the SW forum in any official status. For the precise reason those satellites existed in the first place: To communicate more freely than an official company forum permits.
(Specific Blades communities are a different story of course. I'm pretty sure the Lyceum once had a place in the BoE forum header.)