Mostly American songs or English songs with an American accent!
Jim Reeves
Dolly Parton
Old minstrel songs
Country and Western
There are plenty of Irish pubs in England where you would expect the whole Dubliners/Clancy Brothers repertoire.

If you've seen some of the other threads you'd know there isn't a lot of singing going on in English pubs because of recent legislation making it difficult.

Show me the way to go home...........