While the Pittsburgh Steelers have gradually modified their defense from the Dick LeBeau formula little by little year after year for the past half-decade, there are some concepts that he installed that remain a bedrock of the unit, at least as it compares to the rest of the NFL. The numbers show clearly that they rely on zone-blitz concepts about as much as any other unit in the league.
According to Pro Football Focus, the Steelers saw the third-most snaps in coverage by their defensive linemen and edge defenders of all defenses in 2018.