Maybe I'm reading this wrong, but are you saying out of the last 4 years...only 3 different players have won the AFC player of the week? Pro Football Reference (https://www.pro-football-reference.com/awards/players-of-the-week.htm) shows Lamar Jackson, Stefon Diggs, Big Ben, Watson, Tyreek Hill, Baker, Chase Claypool, Joe Mixon...just in 2020 alone. Or did you mean only 3 players to win it multiple times in the last 4 years? Because it shows Lamar won it twice last year...
Seriously just asking for clarification.
EDIT: in just 2021, 2020, 2019, and 2018 I'm counting 26 different players having one it.