The leader is Shamarko Thomas from Syracuse - he benched 28 times (and also ran a 4.38 unofficial). He's also short - 5'9.
There were 7 safeties who didn't bench. So he has that going for him.
Edit: was curious about Shamarko Thomas's arm length, if significantly shorter than Motta's (considering Motta is 5 inches taller than Thomas). However, Thomas's arms are 31.5" and Motta's are 31.375". So there goes that theory.