I think transforming into a flying creature counts as a unique form of winged flight.
Cannonball also counts as a unique method, essentially being a human rocket.
Does anyone know what’s going on with Jack of Hearts these days? I was going to say he flies by means of being a human rocket, but I read he’s since had his powers amped up significantly. Does he still fly the human rocket way, or does he have get around in the general cosmic powered way?
Does Plastic Man ever transform himself into something that can fly?
Harry Angel, from the long {and justly} forgotten 2000AD strip Angel survived a fighter plane crash only to have the melted flight computer fused into his nervous system: while he couldn’t take off, he could leap from high altitudes {ie burning planes} and glide gracefully to the ground by dint of the flight computer thinking his arms were wings and his legs were a rudder, and adjusting them accordingly.
As for Thor, I was always under the impression that he generated lift by whirling his hammer like a rotor, rather than simply throwing it.