2. Rejection of modernism. He literally wants to return to a tribal society. He says this specifically in both the book and film, he describes the future he sees:

“In the world I see you are stalking elk through the damp canyon forests around the ruins of Rock feller Center. You'll wear leather clothes that will last you the rest of your life. You'll climb the wrist-thick kudzu vines that wrap the Sears Towers. And when you look down, you'll see tiny figures pounding corn, laying stripes of venison on the empty car pool lane of some abandoned superhighways.”

5. Fear of difference. He literally beats the shit out of the pretty guy for being "different" and pretty. Project Mayhem are all forced to dress the same and have no names. They are forced to shave their heads and become his "space monkeys." They are berated for a week in front of the building before being accepted. EDIT: Further, this treatment of the Project Mayhem recruits is authoritarian, they have to follow all Tyler's rules which they repeat them ad nauseum and they have to shed their prior identity to fit into the new group.

6. Cast the enemies as both too strong and too weak. In the film Tyler plans to destroy credit card companies and reset debt to zero, a lot of people would claim the financial system is an enemy that is strong, but also portrayed as weak when they strong-arm the politician threatening to cut his balls off. In the book he wants to destroy museums, destroying history, writing a new history, which is also fascist. He says museums represent a dead world and that "this is our world now."

7. Pacifism is trafficking with the enemy. They threaten to cut off people's balls who threaten to expose them, the cops are literally about to do it to the narrator/Tyler himself at the end of the film, because stopping Project Mayhem is a pacifist route.

8. If you don't see the contempt for the weak here and how they only accepted Bob into their fold because the narrator pitied him, I don't know what to tell you. Tyler would have rejected Bob as unfit and weak. When their homework is to go start a fight, the lesson is that most people will avoid fights (and by extension this makes them "weak"). Fight Club is portrayed as "strong" because they will chase a fight. They're different, they're special, they're enlightened by violence (once again, fear of difference).

These are the ones we obviously disagree on, so these are the ones I'm addressing.

But yeah, 10 out of 14 is pretty telling in my opinion. No, this list of Eco's isn't definitive, but it's got good depth and is a good starting point showing that clearly Tyler has fascist tendencies. Enough that I am comfortable calling him fascist

EDIT: Also while there is no strict nationalism, the entire plot is deeply Amero-centric and treats the rest of the world as though it functionally does not exist when it comes to Tyler's plans.

"You wake up at Seatac, SFO, LAX. You wake up at O'Hare, Dallas-Fort Worth, BWI. Pacific, mountain, central. Lose an hour, gain an hour. This is your life, and it's ending one minute at a time. You wake up at Air Harbor International. If you wake up at a different time, in a different place, could you wake up as a different person?"

Not. a. single. foreign. airport. Not even Canada.