Not that I'm saying all of them are, just that there's a few especially noticable ones.
Nagi being taller than Barou is the worst by far. While reading blue lock I never once thought Nagi was 6'2, though looking back I realised he was slouching in practically every panel...So whatever.
Then I came across this picture of Isagi, Barou and Nagi.
Bro's got a solid few inches on Nagi here. No way he's not taller when he's the same size even with that killer slouch.
For your information Barou's 6'1 apparently.
Otoya's 2cm taller than Isagi and 1cm taller than Bachira...was not expecting him to be a shorty.
By - DodgyWriter