For full disclosure before any comments: I've not been able to attend all sessions, so haven't kept many notes on the performances. And while I'm not completely lacking in ballet knowledge, I'm also far from a technical expert.
The impression I and several others (but like me, knowledgable but not experts) I've talked to had of Ndudi was surprise by his performance considering the awards he has - we saw the ability but it was almost as if he wasn't fully prepared.
Talk has Pisarev and Cao Shuci for the top medals in their divisions - of their five performances, Pisarev's contemporary piece is the only one I've seen.
Hernandez and Sambe are most frequently mentioned for the junior men while Layun (junior women) was getting a lot of talk after the first round.
Some of my favorites: Oleynik, Onuki, Ige and Ito, Ji Young Chae and Ki-Min Kim