France tried to completely recreate itself several times during this period. By way of example, we no longer call it the Frankish lands nor the monarchy. Aggregate governance structures have changed tens of times, whereas the US really hasn't changed dramatically in the post Native American and post Revolution periods.
There are far more Americans who claim German descent than English. Irish, too. And Blacks.
Also, please find a reliable citation that says that more Americans have African than English heritage. That strikes me as a very surprising claim.
1 German 46,403,053
2 Black/African-American (non-Hispanic) 38,785,726
3 Mexican (of any race) 34,640,287
4 Irish 33,526,444
5 English 24,787,018
I’m not sure why people keep bringing up political institutions when the conversation is clearly about cultural institutions.
But, my original comment to you is that noting continuity and shared evolution of cultural institutions between America and Europe during the industrial revolution is not American Exceptionalism, and isn't really something to have umbrage regarding when others note it.