You may have missed this—there’s so much NFL news right now!—but Pro Football Reference recently added unofficial sacks to its database after a long period of research. I suspect most people here use the site quite often, given that it’s an extremely handy repository for stats and historic information about the league, but if you haven’t explored you might not realize how much it shakes up the all-time sacks leaderboard.
For example, if you weigh those unofficial sacks equally with the official numbers, the great Deacon Jones is third all-time behind Bruce Smith and Reggie White.