The small but active college (gridiron) football Threadiverse community is coalescing at fanaticus.social.
CFB
https://fanaticus.social/c/cfb
Kbin.social link
Not a new community, but activity is ramping up with the season starting in earnest over the Labor Day weekend. At this point, it's probably the most active gridiron football community on Lemmy, but that could change when the NFL regular season kicks off in a couple of days.