I understand French immigration to the US were small, but how many were indirect descendents from Quebecois or Maritime French-Canadians that initially moved to New England in the 19th century? In addition, there were French Creoles in New Orleans and Acadians in rural Louisiana. So there are still a number of French descents living in the US. How do they compare with German migrants' descendents in numbers?
You leave out the French Calvanists who settled in the Americas before most of the Germans got here. The Carolinas were full of them and there descendants are still there. They settled from the Jacksonville Florida area all the way up to New England. There were also French colonies all up and down the Mississippi and Ohio Rivers and most of their descendants fused into the population of America.
The German settlers had to be within the top five in numbers though.
Probably 40% of all Americans have some recent German ancestery. On my father's side I am rather typical, being German-Scots-Irish-English. There was heavy German immigration from 1700 to about 1900. In 1900 there were more German-speakers in San Antonio, TX, than either English- or Spanish-speakers. Many Germans colonies in Texas.