Check new and updated thread: Thread 206327
I’ll need to more thoroughly peruse the tracks, but I can at least confirm that track 288 – Unknown 01 is one more "Game Select" BGM. It plays during the game selections within the final three ‘Heaven’ towers, so chronologically, it could fit just before the final tower (i.e. Track 207 and its final set of songs).
Unless there’s a lot of errors and the rest of the unknown music has been identified.