While all you mention have been composed by Sousa, IMO you missed one of the three I expect the Editor of the Washington Post newspaper to know, and if he didn't maybe he should resign, and that is The Washington Post march. Yes, Sousa was very prolific and while I have his entire "book" I have not added them all to my personal repertoire and won't for personal reasons. It's a bit of Sousa trivia I picked up, but the USMC hymn as composed by Jacques Offenbach is an excerpt from his Orpheus In The Underworld from which we also get the excerpt of his Can Can. Too, when Offenbach was on his U.S. tour, Sousa played violin in his orchestra. The violin was Sousa's primary instrument, and reputedly he became a master of it with perfect pitch.