Right now I'm listening to the Midnight Special and I post yesterday in the facts thread that everybody in the universe likes at least one Creedence song.
Are you a CCR fan? I have been since I was a kid, my parents played them all the time. John Fogerty toured here just last year as a matter of fact. They are the most obvious example of American Swamp Rock and are a band I can listen to again and again. Songs like "Suzie Q", "Born on the Bayou", "Proud Mary", "Bad Moon Rising", "Down on the Corner", "Travelin' Band", "Fortunate Son", "Have You Ever Seen The Rain" and "Looking Out My Back Door". They were always criticised for their short and sweet songs, but I think that's what makes them stand out.
God bless you CCR!