I guess it depends on what you are into? I have a bunch because I kept looking for a place to call home, but sadly never found it. Ended up making my own and so far it's been nice.
I'm actually still trying this one out. It's 80's space pirates. Casual and fun.
I've joined this one as well. I'd only recommend it if you're a Steven Universe fan.
Gravefall is currently open for apps. I was considering to try myself, but they seem to be very active and I'm way too busy for it sadly.
This one I always have my eye on, hoping it will open it's doors sometime. It's my cup of tea.
There's a bunch more, but if you feel like searching through various groups you could go over here, in my about us section, scroll down to the bottom right and I have all of my affiliates there. I picked most of those as affiliates just cause I liked them, so you might get lucky and find something you like? Good luck on your search!
- it's a pokemon based rp group that's pretty active and has events just about every month.
- they've got a really large and rad community. They open for new members at the start of the month (but they're planning on capping it at 500 members [which is pretty close]) It looks really cool and it's fairly active.