They all have US flags on their helmets. It’s required by the league. The players pick out the, mostly, idiotic slogans that go on the neck guard part of the helmet. Most players choose to just have the helmet maker logo there.
Kansas City over Denver
Philadelphia over Dallas
Cincinnati over Cleveland
Green Bay over Detroit
Minnesota over Chicago
Washington over NY Giants
Indianapolis over Jacksonville
Baltimore over Pittsburgh
Tennessee over Houston
New Orleans over Atlanta
Buffalo over NY Jets
LA Rams over San Francisco
New England over Miami
Arizona over Seattle
Tampa Bay over Carolina
Las Vegas over LA Chargers