Colts; was backpacking in New Zealand in 2007; arrived in Rotorua on a Monday and wandered into a pub to get some lunch. Full of Bears fans watching the Super Bowl. One lone colts fan asked me to be on his side, so i agreed. Colts won and drunk we got. As with any sport, I believe the team chooses you. However, it actually took me until COVID to take a real interest in the game and learn to understand it.
Mind you we've been poor last few seasons, and I think this will be a rebuilding season too, but Richardson could turn out to be a star.
I've also been following the Bengals while the colts have been poor, not least because they're on TV more and are easier to follow. But somehow I identify with the perennial non-achieving under dog from an unfashionable post-industrial dump. Can't imagine why.