imho, For me -
Patriotic is red, white and blue and yes, it does inspire emotion and love of the USA, but I am a US citizen. Patriotic isn't American, every nation on earth has its patriots and patriotic citizens.
Americana is more of a style, more kitch (but not in a bad way, more as sentimental) but maybe that isn't the right word. The stuff they sell in red, white and blue or at the old country store is Americana, rocking chairs, state fairs, drive-ins, etc. are all examples of Americana.