It is difficult to take you seriously when you write a post about fascism and you don't even mention Giovanni Gentile one time. Go google him...

Therefore I'll try and explain their fundamental differences in another way that should be even more obvious; historically, fascism has always been a reactionary movement in opposition of the political left

Are you implying that anyone who opposes the left is a fascist?

And more importantly, how do you know the differences between someone who opposes leftists views and is not a fascist with a real fascist?

Literally every possible characteristic of fascism is anti-left

I read "totalitarian ambitions" which goes hand in hand with the left.

These men aren't full-on Nazis

Well Trump is a great ally of Israel, antisemitism in today's society is coming from the far left like the congresswoman from somalia.