Mature Gay-Friendly Guild on Devona's Rest
Crystal Desert is the unofficial LGBTA server. Rough Trade, Prismatic Order, and Gayme On are there. Those guilds do span multiple gaming communities though so you’ll get a mixed bag of involvement from them. I’ve found most guilds on Crystal Desert to be fairly accepting and friendly (e.g. no F-bombs in Mumble) so don’t feel like you need to stick to finding a guild that outwardly identifies as LGBTA.
My partner and I regularly play with gay couple. We are currently looking for a guild as well. Feel free to look us up (kandolo.2574).