You can contact them but you have to be able to be better than what they have. The question also is do you want to go somewhere that is gonna get beat every game just to say you played at a P5 school? Some of these schools only win a few games a year. That is why they do not have 90 plus pitchers on their teams. Most 90 plus kids would rather go to a competitive mid major than a bottom feeder P5 that gets beat every game. That is not the case in all of them that you named but many. They try to recruit those kids but their facilities lack or their level of play lacks to draw those kids. The top level kids have been competitive in travel ball and school ball and want to continue somewhere that is competitive. Just remember that scouts don't care where pitchers come from if the numbers are right for the draft.