I don't personally know, but I remember Spore and Sagan 4 having fairly in-depth wikis. There was even a GamingSteve wiki.
It might be worth your time to get in touch with Hydromancerx via the forum or (more likely) on Steam. I know a lot of his projects and mods are still ongoing and he usually keeps meticulous catalogs of info past and present. If anyone around here knew, I'd see him first. I also am aware that Oviraptor has experience with wikis, though I am not sure to what extent. Also, I seem to remember Brandon working on the GS wiki, but that could be completely wrong. Just kinda working from memory here.