Mmm I hesitate to say that "Friends of Momodi" LS is an active one because I'm still not sure if it would fit what you're hoping for.
It is primarily an LS filled with people who RP [occasionally] in Ul'dah. So we do talk about topics in RP but we also have an enormous amount of OOC chatter. It used to be a good mix of OOC/IC but when it grew to encompass lots more who RP in Ul'dah... well it's hard to do that when your character may know 1/4th of the linkshell. Now, you might see something IC (indicated by quotes, though sometimes I'll quote something and some will tease me about it) about once a week
It's honestly the channel I have on by default to chat in.
It is primarily an LS filled with people who RP [occasionally] in Ul'dah. So we do talk about topics in RP but we also have an enormous amount of OOC chatter. It used to be a good mix of OOC/IC but when it grew to encompass lots more who RP in Ul'dah... well it's hard to do that when your character may know 1/4th of the linkshell. Now, you might see something IC (indicated by quotes, though sometimes I'll quote something and some will tease me about it) about once a week
It's honestly the channel I have on by default to chat in.