If the Justice League is DC Comics’ most famous superhero team, then the Teen Titans ranks as a close second.
While the latter will have to be someone completely new serving as the Boy Wonder, Cyborg could serve as the team’s leader when he’s not hanging out with the Justice League.
Starfire, Raven, Beast Boy, Aqualad, Wonder Girl, the number of possible candidates for the cinematic team is quite large.
So far the only Teen Titans-related characters who have been seen/alluded to in the DCEU are Cyborg and Robin.