A thought: the original Teen Titans are beating the Justice League when it comes to passing on their super-genes. Leaving out possible-future stories and backstories, it comes down to just Aquaman of the core group, and Green Arrow as the most prominent member outside the “Big 7.”
As for the original 5 Teen Titans (now in their mid-twenties):
Speedy – now Arsenal, has a preschool-aged daughter, Lian (by way of international super-villain Cheshire).
Wonder Girl – now Troia, had a son Robert with her husband, but both were killed in a car crash.
Aqualad – now Tempest, has an infant son Cerdian with his wife Dolphin.
Kid Flash – now Flash,
nearly had twins, but a villain beat his wife Linda so badly she not only miscarried, but lost the ability to have any more children.
Robin – now Nightwing, no kids.
And of course if you do add in future stories, all five had children in Kingdom Come… who came back to visit the present-day mainstream DCU in “Who Is Troia?” in 2001.
Admittedly the mortality rate is high, but the
60% birth rate certainly beats the core League’s 14%.