There was Thomas Paine. I wouldn't call him a socialist, anarchist or even a leveler, but based on his writings it's clear the revolution didn't go as far as he had hoped. It's funny, his pamphlet, Common Sense, served as the call to arms for the revolution. It was one of the most mass-produced documents in the colonies, but after all was said and done he was never included in the pantheon of "Founding Fathers."