As far as a former natty champ who enjoyed an amazing growth trend throughout his HS & college career was Jon Llewellyn (may he R.I.P.) He began HS as a 98 pound freshman. He finished HS as a 167-pounder. He began college as a 167-pounder (if I'm not mistaken). And ended his career as the NCAA HWT National Champ, defeating Kurt Angle.