Howdy, I'm headed around to every NFL sub looking for answers on what every NFL fanbase calls themselves (think Raider Nation, Bills Mafia, etc.) in order to put together a full list.
Here's what I have so far based on preliminary knowledge. Feel free to correct me if there's a better option than what I have listed.
AFC WEST
Raiders: Raider Nation
Chiefs: Chiefs Kingdom
Broncos: Broncos Country
Chargers: Bolt Fam(?)
AFC NORTH
Steelers: Steeler Nation/Yinzers
Browns: Dawg Pound
Ravens: Ravens Flock
Bengals: Whodey Nation(?)
AFC EAST
Jets: ???
Bills: Bills Mafia
Patriots: ???
Dolphins: ???
AFC SOUTH
Texans: ???
Colts: ???
Titans: ???
Jaguars: ???
NFC WEST
Rams: Ramily(?)
Cardinals: Bird Gang/Red Sea
Seahawks: 12s
49ers: Niner Gang/Faithful
NFC NORTH:
Packers: Cheeseheads
Lions: One Pride
Vikings: ???
Bears: ???
NFC EAST
Cowboys: Dem Boys(?)
Eagles: ???
Commanders: ???
Giants: Big Blue(?)
NFC SOUTH
Buccaneers: ???
Saints: ???
Falcons: ???
Panthers: ???
Top voted answer by Thursday (11/23) morning wins. I'm only posting this in subs with names I don't know or are iffy on. Show me what you got!
In all seriousness there is no nickname for Bears fandom. At least nothing that actually is used. We’re just called Bears fans or any of the depressing titles listed in this thread.