KC Chiefs, though first I had to forgive them for their unceasing pummeling of the Seahawks in far too many years of the AFC West. They always had those big bruising O-Lines and the Nigerian Nightmare and guys like that and just ran right over the undersized Hawks DL, expecially in KC. Except for that one sparkling game where Derrick Thomas had 7 sacks but Krieg hit Skansi for the winning TD as time expired. Lately, KC has just been fun to watch, especially since Mahomes arrived.
I root for the Jaguars now too, on account of Gardner Minshew. His senior season at WSU was so much fun to watch. And the Mark Brunell years, lefty in his prime, I agree with the Steve Young comp during Brunell's peak years. Plus a UW guy. Brunell won a couple playoff games
I also tend to root for the Buffalo Bills, from back in the Marv Levy Jim Kelly days, even though they never won the big one in 4 tries. From their earlier era, truth be told, OJ Simpson was also so amazing for them back in the 70s and he was my idol as RBs go, and I recall him getting his 2,003 yards in snowy conditions. I would read his interviews and try his moves, and darned if they didn't actually work in 6th grade playground football!
I used to root for the Bengals back in the Boomer Esiason days, but these days, not so much.
Interesting that nobody's mentioned the Broncos yet, except as a dislike. I seem to run across Bronco fans quite a bit in my corner of the Pac NW. I would always root for them against the Raiders, back in the day. Monday Night Football in the snowy confines of Mile High Stadium was alway interesting to watch. I've had good friends who were Bronco fans, and have to admire their overall enthusiasm and loyalty to their team. So I'll generally root for the Broncos if they're not playing a more-favorite team of mine.
To round it out, I'll add the Chargers, when they were still in SD. Had some good old AFC West games with them, and Air Coryell and Fouts & Co. were always fun to watch. Then their SB year, with Junior Seau, sad how things ended for him. Plus the cool unis and lightning bolt helmets.
So it looks like I still have a little affection for all the old AFC West teams aside from the Hated Raiders.
Hate list... Raiders and Steelers.