How does one find a good guild?

Out of the reddit guilds, the sidebar guilds, and all the guilds on the swtor website, how should one go about picking a guild? Are there any red flags to look out for when choosing a guild?

I know that I want a guild that RPs to some extend, is Republic, and is EST or CST.

Quick Edit: Also, I would like to try to find a guild with a name that is either not immersion breaking, or at least lore friendly.