I think all our bigs are "mobile." I was always impressed to watch Dorka run the floor last year -- not the usual big trot, like you see with Kardoso or Key. She extends her legs. Liv sometimes ran like that, and Piath too. I wonder if Amari will run like Dorka.
Aaliyah and Ayanna are quicker than that. Aaliyah sprints down the floor. But neither of them is as quick as Aubrey was before the injury, and may be again. Paige used to claim (jokingly) that she was the fastest one in practice sprints, but everyone knew it was Aubrey.