Queen.

Wait...
I am pretty sure Queen is huge in the US?

They really aren't compared to how popular Queen is in the rest of the world. Their 1970's albums are virtually unknown here, aside from a handful of singles (Bohemian Rhapsody, Killer Queen, and Somebody To Love, as examples.) Compared to other bands of the era, like Led Zeppelin, their albums are not commonly seen in record stores, nor do you hear them too often on radio or see their videos on VH1. They only had one number one record in the US (In 1980) and were never really too popular in the US in albums before and after.