Notes:

So CN dropped what Many assume to be the new intro to Steven Universe for Season 6 (or Mayde its a new series on its own IDK).
Anyway these gems / Steven + Cactus Hybrid I assume are gonna be the antagonists of the future.

It's unfortunate to see Jasper there, Just give the poor gem some closure.
I assume that red/blue gem is a fusion, and one of their gems is unquestionably the aquamarine we saw earlier in the series.
Also, I'm not surprised to see White Diamond here.
I have little to say about the others, we got 2 more lapiz lasulis, and a giant centipede that kina reminds me of Drapion.