discarding what makes fascist movements unique

And what specific thing does it discard that makes them unique?

I assume systematic chauvinism itself makes individual violence and violent repression likely

It is theoretically possible to construct non-violent systematic Chauvinism. For example by employing a condescending delusion of protection or the exaltation of complete non-violence. These would be gross, problematic, and weird but not destructive in the way fascism is.