Griffith
I can't tell you what SIMMY thinks but I imagine there is some logic. Power/contact, future D moves, etc, etc.
Not sure why you'd want anyone to PH for Griffith so I'd uncheck his PH box on the settings page. Obviously he doesn't hit lefties well but, over the course of a season, there aren't going to be that many late-inning situations vs LH where you'd want him out of the line-up for one of the 4-5 guys sitting on the bench. He might get 3-4 AB VL where you'd think "Damn, wish I had a PH in there."