Some titans are more popular but the Teen Titans in general? Would have to say no. The current New 52 series is blah but the Rebirth versions(classic ones) are so much better....and TT Go sucks....Constantine had a huge uproar when it was cancelled and he's had a movie, his own books in Hellblazer, JLD and Constantine now Rebirth Constantine Hellblazer again...
So I'd have to disagree. She is far from one of the more popular teen titan, Cyborg, Kid Flash, Robin etc Starfire is not....
Constantine needs to be in this game. The TT are more exposed with the shows over the years between YJ and TT go etc but from a magical, cool character point of view Con is as popular as anyone else with magic.
But as far as Titans namesake goes, Titans>>>>>>>>>>>>TT. The Titans are instantly better and cooler because of ginger Wally West alone