I played Bb trumpet in middle school and high school band. Below are some of my favorites (although my memory is vague on exact names and composers):
The English March Suites 1 and 2 by Gustav Holst
Jupiter: The Bringer of Jollity, also by Gustav Holst
Chorale and Shaker Dance (a combination of Simple Gifts and music of the composer)
Oveture to Candide by Leonard Bernstien
Chanson and Bouree
Florintiner March
Haydn's Hen Symphony
Slaughter on Tenth Avenue
Medly from Miss Saigon
Medly of music by Andrew Lloyd Webber
Medly of Big Band Tunes (include American Patrol and April in Paris)
From Jazz Band, I enjoyed:
Perdido
Big Mama Cass
In The Mood
On Broadway
Birdland