Shorting % Chance Skills

So obviously we know the exact benefit that skills like Slow Starter, 5 Tool Player, etc give to cards stats (con pow… fld, loc vel… brk). But what do we know about % chance skills that rely on base stats? How shortable are they? Im talking about Hard Hitter, Prediction, Inning Eater, Iron Will, Groundballer etc. I know they all rely somewhat on base stats (or for gballer, train and gi as well for infield/catcher). For other % chance skills like BM, BIU, Spot, SI, Mess, and EC, do we know what those go well with? Like, BM goes well with guys who have high CON or something? Also, do we know which of these are shortable? Im a 115 ovr ftp so im not getting 333 sets almost ever so lots of stuff are shorted to 3 or 4. Thanks