NFL team owners collect millions in revenue. They wield outsized power over their organizations and in their communities. They point to the bottom line, wins and losses, when firing coaches and executives, sometimes without giving them much time. But their own won-lost records appear nowhere.

Even people who follow the NFL closely might not know whether Miami Dolphins owner Stephen Ross owns a better record than New York Giants owner John Mara (he does).

They might not know whether female owners account for two of the five highest winning percentages since taking over their teams (they do).

They might not know that the only team without a traditional owner could lose 200 games overnight without dipping below .500 (the Green Bay Packers could).

They might not know that five of the last six owners to buy (rather than inherit) a team make up the bottom five in win percentage (they do — the lone exception is the Buffalo Bills’ Terry Pegula).

Some of these ownership situations are difficult to evaluate for reasons such as owners allowing their offspring to operate their teams. I’ve used simple criteria in ranking owners from worst to best win rates below. For our purposes, wins and losses are counted for owners after the NFL has approved their purchases; after an owner…