every team commits Offensive holding--you will "see it" on every play, if you are looking for it. Therefore every team is lucky it's not called as much as it is.
this season there were only 702 holding penalties over 282 games--that's less than 3 call per game.
As for when these penalties are given, the article mentions that:
“This season, in a year where the Chiefs are being labeled as the luckiest team ever, in the second half of games that are within one score either way, no team has had more flags thrown against them then the Kansas City Chiefs,”
Plus the Bills have 50% more 1st downs due to penalties. they are ties for second in IDs disallowed by penalty (Bill are #1).
the guy listed his references. use them.