No, they were not considered “left wing”. That term didn’t emerge until the French Revolution, a decade after the American Revolution. The contemporary term would’ve been whigs or revolutionaries.
Neither was “radical” really a thing either, at least in the thematic sense of a root-level critique of the economic system. That wouldn’t come until nearly a century later when Marx published Capital.
Neither was “radical” really a concept in the sense of a root-level criticism of economic systems. Economics was in its infancy, liberalism was just getting off the ground, true radical critiques wouldn’t emerge until Marx, nearly a century later. Yes they were certainly considered to be traitors, rebels, upstarts, innovators, and in modern times we conflate that with “radical”, but they weren’t radical in any real critical sense. They were all about preserving private property and exploiting workers, they just wanted the laws to be chosen by white property owners rather than a British king, they were substantially reactionary not radical.