5. Tom Landry
Not only was Tom Landry one of the most iconic head coaches in Dallas Cowboys history, but his gameplay also proved to be pretty innovative. He’s credited with inventing the commonly used “4-3” defense during his position as a defensive coordinator for the New York Giants in the ’50s, as well as forming the Flex Defense. His pioneering wasn’t limited to just plays, though. Landry was one of the first coaches to recruit outside of the world of football, enlisting soccer players as placekickers like Efren Herrera, and sprinters as wide receivers like Bob Hayes. Of his 250 career wins as a head coach, Tom Landry led the Cowboys to five Super Bowls, two of which they won.