List of people in politics that I think have actual principles and are in it for more than just power (this will be controversial, it is just my opinion and off the top of my head):
Bernie Sanders
Joe Manchin
Kyrsten Sinema
Tim Walz
Tulsi Gabbard
RFK Jr
Vivek Ramaswamy
AOC and the squad
Dean Phillips
Doug Burgum
Any 3rd party candidate for president (because you have no shot at actually winning)