RatFink
Carnivore
Weird Rat. You just made that long post and never mentioned Corvettes.
A corvette was never a true blue-collared muscle car though. That was more a white-collared sports car. I think by definition you can call a sports car a two door, two seater that is low down, attempts to handle and is decently quick.
The corvette might fall into the muscle car realm because they came with 427s and such - but that's all they had to go fast. They didn't have a small, forced induction engine to lighten the nose and improve handling, they only had these giant iron block V8s that ruined the balance of these cars.
Take for instance the original Cobras, they came in 289 and 427 variants. The 427s were never the handlers the 289s were, but both of them were way too much money to be a muscle car, and they only fit 2 people.
Generally speaking, muscle cars must also fit 4 people. They were decently practical cars - unlike the corvette and cobra.