On the hitting side, there isn't much to talk about until the drafted guys get assigned , but there are a few guys worth mentioning.
In the DSL, Tornes continues to hit well with impressive EV numbers. It hasn't resulted in any home runs yet, but he's still been impressive for a a kid that turned 17 just 4 weeks ago. Espinal and Cesa are also doing well in the DSL, though they are both repeating the league. Michael Martinez absolutely demolished the DSL and was promoted up to the FCL at the start of July. He's performed well in his short stint in the FCL with a .783 OPS.
In Augusta, there are 3-4 hitting prospects that are worth monitoring. Hartman, Drake, and Carey are all doing relatively well, albeit with very little power at the moment. But they are all just 19, so there's still time for that. And so far the plate discipline and bat to ball skills have been pretty impressive for these 3 guys, plus they are all very good defenders, particularly Drake. Douglas Glod has also been hitting the ball well after he started the year on an awful 0-23 run. He has a line of .252/.372/.407 since that slump to start the year. The K rate is pretty concerning though.
The only player worth mentioning in the upper levels right now is David McCabe, He has been on fire the last month+ with a .917 OPS over his last 117 PAs.