Rebounding is one of the best characteristics of the big men, amongst the blocks and dunking. When you are 7-0, it's easy to have more than 7-8 rebounds per game, and with this pace, you can't make excuses anymore.
In the league, we have 13 rebounders that averaging more than 10 rebounds per game, and the best in the NBA are Andre Drummond (15.2), DeAndre Jordan (13.8) and Dwight Howard (12.9).
Although, on the other side we have big men who are not good rebounders, and no one talks about that.
I will just mention to you that Ben Simmons (9.1 REB), Russell Westbrook (8.9 REB) and Lonzo Ball (7.4 REB) are amongst the 35 best rebounders in the league and they are point guards (hm, Ben Simmons can cover 4 positions).
Check the top 10 big men that are not good rebounders. I will sort a list in a random order, but they have to play more than 15 minutes per game.