Bringers of Fire is RP friendly and have a Lovecraftian-esque theme but it’s a loose theme and to my knowledge they do not require people to be strict with lore and such . They also do PvE and do teaching runs of places like Wyrm, Vile, KK loops, etc. However most of the RPers (part time and full time) aren’t on much due to real life things. The guild leader is only a part time player these days and only RPs on one toon. Then One guy in there that I used to RP heavily with is working two full time jobs and can only log in once a month or so. But they could be an option even if it’s only part time or RP friendly.
There is also Too Hot Too Handle which isnt an RP guild persay but has some people who RP, or ERP. Same with Fallen Angels of Derketo, but FAOD is a female toon themed guild and if you have any male toons they would be allowed to be in there, but most likely kept at rank one and referred to as slaves ICly.
Empire of Stygia is around still but its been my experience that the RP they do is minimal with only a few members interested in it. I’m sad to see House Merano folded but it’s not surprising. And the aocrp website isn’t active anymore because the owner of the site no longer plays Age of Conan and has 0 intention of ever returning. I do know there is The Gathering (rp) but I don’t know how active they are. I do know they have a couple players who play fairly regularly though.
My personal thoughts is that while the number of RPers on the game is fairly low, the idea of one or two large super RP guilds doesnt work in the long term. You saw this with House Merano and EoS/HJA and both monopolized the RP community and anyone that wasnt in those guilds were, from my own personal experience, not treated well by members of either guild. And with both guilds, there was some amount of freedom for your personal character’s backstory but you had to conform, at least a tiny bit, as well as be able to tolerate the many shortcomings of either guild to generally be accepted.
I could go on but I remember there being small but active RP guilds before Merano popped up and then they swallowed up these guilds with the promise of activity and creative freedom, and were basically duped. And it was the same thing with EoS/HJA.