If you don’t want to deal with server transferring, I am a part of a cross-realm alliance raiding community. We do normal/heroic raiding and some keystones, and run Tues/Wed from 8-10 Eastern. We are quite casual in terms of progression.
If you might be interested in a community team instead of a guild team (we do have half a dozen of us in one guild, but membership is not required), please check out the link below and reach out if you’re interested.