There was a big 'revolution' in beer in the US in the 70s and 80s. Before that there was really only one kind of beer, light American lager like Budweiser and Miller and Coors.
There used to be a lot of 'cheap' beers, most of them regional but some national. Carling's Black Label, Pabst Blue Ribbon, Olympia, Falstaff (West Coast), Schlitz, Lone Star (in Texas), etc. They were really awful, if you ask me. American beer was 'designed' to be weak, so you could sit in front of the TV in your undershirt and drink a whole six-pack. We still make beer like that but it's not as bad as it was.
In fact Budweiser says right on its label that 'This beer is made from only the very finest corn, rice and barley' Corn and rice have no place in a lager beer, they are only there as 'extenders'. This is like a wine label saying 'This wine is made from only the very finest potato peelings!'
Anyway in the 70s we had a 'revolution' and now a wide variety of very good beer is made here, often by microbreweries that are totally unknown outside of a small area. We have lots of all-malt beers, bock, porter, stout, IPA, pilsner, etc. etc. Those used to be only foreign, and if you didn't live in a big city you'd have to search for them!