Hello! My guild Evolved might be a good fit for you! We are an 18+ Alliance community on the Proudmoore server, which you said you already were on so no server transfer needed! 
Most of our members have families, jobs, etc so we understand the importance of real life coming first. Because of this, we do not require 100% raid attendance. We run 3 raid groups, so plenty of room for you. Everyone is super friendly, mature, and a ton of fun to be around. 
You can read more at:
You can contact me at BNet Starlight200#1548 or Discord Star#0700 if you have more questions!
I wish you luck in the guild hunt! Finding the right group makes a huge difference!