There's a stat that someone was keeping called "impact tackles." The idea is tackles of less than 3 yards or less, plus TFLs, plus sacks, plus 3rd down stops. More or less anyway, I don't remember the full details, but Wagner has either been leading the league or following one or two players since entering the league even as a rook. He truly is the prototype, IMO.
The other main player on the list was Bowman. Lavonte David was the other guy that cracked the top two one year with a monster season. Guys like Patrick Willis and Luke Keackly generally hung around between 5-10 on that list, if I remember right.