re: Who is coaching these hitters?

Depends on what exactly are you asking. If it’s about game situational approach and maybe a few tweaks here and there then that would be the LSU coaching staff. If you’re asking about overall technique, style, etc then that would be each player’s hitting instructor and they all have them. I think there’s a misconception that college coaches spend hours working on hitting and fielding techniques and that’s not really the case. Also, the best hitting coaches have their own facilities and make a pretty good living functioning that way.