I'd also add college football to the conservative fan list. The culture around college football is very conservative, it's most popular in deeply red states, and it is where the chant that led to the "Let's go Brandon" chant was popularized.
Yeah, I was thinking NFL with my comment but CFB probably has a more conservative fanbase just because outside of USC most the big time CFB programs are in pretty red areas. Even in the Big 10 it's more of an even split and the actual fanbases probably skew a bit more conservative relative to the region.
Columbia is in a relatively blue area of my State, but even so, USC has a reddish fan base, and I wouldn't really call it a big time CFB program. Southern Cal is blueish and is a big time CFB program, and some people do call them USC, tho that really should be the shorthand for the Gamecocks' school, not the Trojans'.