The site I use is RP Repository, but I mostly use it to house my main OCs. I mainly like it because the groups are easy to maintain (though not as detailed as WTF) and it works really well on mobile!

Visionary Tales reminds me a lot of my Invisionfree phase, but I used CAUTION 2.0 as my hub for RP back then. I never liked it because all the games I joined there never went anywhere...