I am biased (as we all likely are) but if you’re looking for a small tight knit community guild, Legacy on Grobbulus Alliance is a fun time and low key vibe. No one else on the server besides us, so if you’re looking for numbers Whitemane and Mankirk are good too.
We are currently on AQ40 progression, and clear MC and BWL (plus the 20 mans and many dungeons and world bosses) weekly.