The generic use of this term is problematic. I think what you mean is Standard American Beer (BJCP category 1) and possibly even American Light Lager (BJCP 1A) and American Lager (BJCP 1B).American beer?
The description you have used does not fit many if the other American styles such as Pale American Ale (18), amber and brown American Ale (19) and American porter and stout (20).