I can definitively tell you that anyone I know who I could ask that question of would be able to say Richard, George or Luis with a random number afterwards, at least knows king George due to musical theater, and would be able to give a more detailed breakdown of the factors behind the revolution than the vaguely conceptual, although I’m not sure what level of granularity you need for it to be the “real” reasons. (You’d get taxation without representation, quartering troops, Boston massacre, and probably some that i can’t recall and a “the rich white ruling class resented being governed and seized an opportunity for justifiable rebellion and the cause was just pretext”)

My brother in law would be the most uncertain. He almost certainly doesn’t know what an oligarch is, but he has enough 'murika to him to be resentful of royalty. From the kids most royalty he could name would be animated I think. Probably hand wave the essentials of the revolution without getting names right, and I have a sneaking suspicion he’d call the Boston tea party a cause.

There’s a lot of variety in what you find in people.