Manu.
He's the poster child of modern NBA analysts
Easily Bill Russell.
Largest statistical defensive footprint in the history of the NBA even with the ambiguity of 60s data
Rodman is probably up there.
Ben Wallace comes to mind, also.
They both had incredible stats though. Didn't score, but were just such dominant rebounders it is hard to say they didn't have the stats to back it up.
That's not what the question is, though. The stats are certainly there but they still don't belie the total effect these guys had on the game. Defensive effort alone isn't totally measurable. A guy thinking twice of driving the lane or simply altering his shot into a bad miss because Wallace anchoring the paint isn't exactly measurable. However, that's still impacting the game in a way greater than what the stats show.
but they both had the defensive stats. I mean Ben Wallace led the league in shot blocking at 3.5 in the same year he led the league in rebounding at 13 and had 1.7 steals. He followed that up with 15.4 r, 3.2 b, and 1.4 s. Those were his best 2 seasons, but he also had about 3 others where he had elite level stats that matched his impact. Rodman was never really a shot blocker or steal generator, but he led the league in rebounds for 7 straight years and by at least 1.43 per game all 7 seasons with multiple years of greater than 4 rebounds more than his closest competitor. In other words, Rodman was such an elite rebounder his impact was perfectly visible in his stats.
You can look at the box score stats and see that both Big Ben and The Worm had tremendous positive impacts. Now sure defense in general isn't as easy to capture statistically, but rebounding sure is and Rodman is the greatest rebounder in league history and Wallace was also elite (and had elite shot blocking).
Ben Wallace had an amazing defensive footprint in Detroit and the Worm had a really good one during his prime as well, even though it was a level below Big Ben.
I know he doesn't qualify for this, but Kevin Garnett in the '07-'08 season, was one of the most dominant players I have ever seen and his stats didn't translate in his first season with the Celtics. He was easily the MVP of the league, but stats basically win that award. That season he averaged 18.8 and 9.2.
He had the highest PI RAPM score in 2008 and anchored a historically good defence lol, hardly an underwhelming statistical portfolio.
Dennis Johnson and Bobby Jones are others that come to mind from the 80's.
Bobby Jones and 80s Dennis Johnson look good in
WOWY/GPM. Think Jones has an AuPM score (basically an imitation of PI RAPM with box data and raw on/off) thanks to Harvey Pollack recording +/- data in the 70s and 80s for some players and he was great in it as well.