I guess the best way of categorizing what I am referring to would be the position that most colleges project a given prospect to fill. We are all aware of high school quarterbacks/"athletes" who wind up as wide receivers or defensive backs, or safeties, who after bulking up, become linebackers.
I am particularly interested in what your data say about defensive tackle prospects. Recruiting defensive ends has not been as much of a problem for us, historically, as DTs, which requires a unique blend of size, strength, agility and mobility. Recruiting the latter skill set has always been difficult for us, especially compared to the success LSU, Auburn and Alabama have enjoyed over the years.