Inspired by @Bills_Chick's quote of this, I did some digging. Results are quite interesting and not what I expected. Since '17 (unless noted):

Doug Pederson: 29-28-1

Kyle Shanahan: 25-28

John Harbaugh: 29-30

Zac Taylor (since 2019): 18-26-1(!)#BillsMafia https://t.co/j3BjrVvz1k

— McDermott/Beane - 2024 (@Shue_Box) November 28, 2023