OK I guess I'm just being super Halperin-y about it because it's late and we're too tired to write entire paragraphs, so I'd say basically this (purely from a performance standpoint, not a prediction of how much how much it will move the polls):
GOOD: Williamson, Warren, Bullock
PRETTY GOOD: Bernie, Delaney
OK: Buttigieg
MEH-PLUS: Klobuchar, Ryan
MEH-MINUS: O’Rourke, Hickenlooper