If you want to see the definition of perfidy in action, look no further than Flimsey Grahamnesty, Micro Rubio, John Hoeven, John Cornyn, Thom Tillis, Lankford, Inhofe, Scott, Scott, Romney, McConnell, Cassidy, Thune, Ernst, Boozman, Murkowsky, Wicker, Hyde-Smith, Shelby, Blunt, Sasse, Toomey, Rounds, Portman, Burr, Lee, Capito, Barrasso, and Collins.
Your list of names as an example of perfidy is awesome!