The most Athletic Kid are Jordan Hunter, Mike Jaquet, and Grayland. That's speed, agility, vertical, durability, and endurance. Although I seen a 5'6 kid from PA do a tomahawk two hand the other day.
Now as for as Athlete. There is no question and Idc about small school or whatever. Grayland gets it done against whatever competition. He is a top tier football player. Could be a mid major basketball player. His 10.6 would put him among the fastest in the area regardless of class. He is the best Athlete no question.