Ramirez is legit as well. He's been an age darling for a while and there was some EV data posted recently that was encouraging in terms of ceiling.
I haven't sat down and done a list in a while, but I'd guess Sanders and Ramirez would land in my 15-20 range and no one else would crack 30. Leigh, Scalzo, and Armstrong have big league relief profiles.
But yeah, it's pretty bleak. The good news is there's a log jam at Iowa, so potentially that missing wave of talent doesn't have to be felt too much as it'll take time for the org to work through the guys there.