Counterpoint: Italian futurism. Though I don't think drawing a futuristic city with lots of trees is fascist, I think it's pining for more green spaces. Or for built environments to be aesthetically more pleasant than a sea of asphalt.

Futurism and ecomodernism were/are both pretty associated with the furthest right.

This isn't true. Even aside from Italian futurism, there is also art of places like "Germania," the proposed super-city that some Nazis dreamed of making the capitol of the conquered world.