Hard! I stick to the era, not the album. A lot of album doesn't need an addition. Like Showman, it's more like a Party Girl. That doesn't fit on Boy, October or War, but is a nice song from that era
Love is All We Have Left - Zooropa/passengers
Lights of Home - Pop
You're The Best Thing About Me - Bomb
Get Out of Your Own Way - ATYCLB
American Soul - HTDAAB or Zooropa
Summer of Love - ATYCLB
Red Flag Day - War
The Showman (Little More Better) - Boy to War
The Little Things That Give You Away - Unforgettable Fire / The Joshua Tree
Landlady - Achtung Baby
The Blackout - Achtung Baby / SOI
Love Is Bigger Than Anything in its Way - HTDAAB
13 (There is a Light) - Passengers/No Line/ SOI
Book of Your Heart - Unforgettable Fire/Bomb