Do you know how to look at Guild Rankings? You can check out Huild Descriptions including GE Trophies there.
You might also want to skip down to the Angkor world subforum on this forum and look and post there.
An unsolicited recommendation, make of it what you will.
In addition to any other traits you are looking for in your new Guild, look for a Guild that emphasizes teaching. You can and will get questions answered here, but working with Guildies is a lot easier. You build up relationships with people who know your city and can therefore give you direct help and much better advice.