They're cooking down in NXT at the moment give it about a year or two and Lash, Jakara, and Kelani will all be on the main roster. Lash especially is somebody who will likely translate on the main roster way better than NXT as she has the personality and charisma that most technically better wrestlers don't have, which will captivate the audience in a way that they can't. She's also steadily improving and is good in the ring as it is. Kelani is being treated like a big prospect for the future they obviously see big things in her, and Sol Ruca is the same, granted she is the Logic brand of black so most people probably wouldn't look at her for representation.
Tiana Caffey(Tatiana Parker) is also on the way, and Kiyah Saint just made her NXT LVL Up debut tonight.