I would say the Cowboys under Jerry since his "I want the credit tantrum" are pretty unique in ineptitude. Although you picked a few organizations that are right there with Jerry.
Here are the top NFL playoff wins since 2000:
New England Patriots: 30 wins, including 6 Super Bowl wins ¹
Baltimore Ravens: 17 wins, including 2 Super Bowl wins ¹
Kansas City Chiefs: 16 wins, including 3 Super Bowl wins ¹
Philadelphia Eagles: 16 wins, including 1 Super Bowl win ¹
Green Bay Packers: 15 wins, including 1 Super Bowl win ¹
Pittsburgh Steelers: 15 wins, including 2 Super Bowl wins ¹
Seattle Seahawks: 14 wins, including 1 Super Bowl win ¹
San Francisco 49ers: 14 wins ¹
Indianapolis Colts: 13 wins, including 1 Super Bowl win ¹
New York Giants: 11 wins, including 2 Super Bowl wins ¹
Los Angeles Rams: 10 wins, including 2 Super Bowl wins ¹
New Orleans Saints: 10 wins, including 1 Super Bowl win ¹
Tampa Bay Buccaneers: 9 wins, including 2 Super Bowl wins ¹
Denver Broncos: 7 wins, including 3 Super Bowl wins ¹
New York Jets: 6 wins
Carolina Panthers: 6 wins
Tennessee Titans: 5 wins
Jacksonville Jaguars: 4 wins
Las Vegas Raiders: 4 wins
Dallas Cowboys: 4 wins ¹