re: Can someone explain how it is decided who recruits what players/

It's divided by states and regions. It's not by position most of the time, it's who has connections, relations or contacts with high school coaches of an area or state. When LSU recruited my son 10 years ago, the D-backs coach recruited my son, not the O-line coach, because he had been a coach in his past in Mississippi. My son got to know the O-Line coach at the summer camps and early season homegame invitations.