NA-W
Angelica Domains
Angelica Organizations
NA-E
Luna Domains
Luna Organizations
EU
Selene Domains
Selene Organizations
OCE
Oceanus Domains
Oceanus Organizations
Alright, just putting that there so you have them links.
The problem with what you are asking is that no one is going to come tell you "these people are jerks" and have it be an unbiased opinion. It is physically impossible!
If you have an unbiased opinion you do what I do and tell people to check out the stickied kingdom recruitment posts, find one you like, and tell them to hit the discords up to get a feel for the communities.
If you are biased, you simply bash others and tell people to come check out your discord.
I'd finish by linking you to our duchy discord, but that would defeat my whole arguement :D
Look around, get to know people, don't feel like there is a rush because for me, finding people you like it of the utmost importance to stickin with this game.