Hey Feldrfang.
There are a couple of guilds that advertise in Trade (not all are spam invite guilds) or here on the forum that are not necessarily RP/roleplaying guilds. I didn’t see roleplay mentioned in your post so I tried to find a few that offer the interests you seem to be looking for from the Moon Guard Guilds List in this post:
‘Moon Guard Guilds List’
This for the guild Nevermore
And this for Creepy But Harmless
Also not sure if they are recruiting but I still see people with the guild tag all the time and they were great when I had a character in the guild ages ago. Check out Laughing Skull Clan. Good luck with your search. If you are cool with roleplay even casually there are a whole bunch of other resources we could recommend. Check back in and let folks know!