Well done.

Of course, BIAB has been around for so long, so the chords will often be a topic of conversation, and now again.
The chords do show that there is a maximum of a 4-note chord.
In the picture, the bar numbers 33...36 all show the same chord ?
Of course, you have diatonic chords (to the scale) chords, and based on C major, you can't make all the chords that are listed, right?
diatonic chords (to the scale)
C | Dm | Em | F | G | Am | Bdim | ,
recognise the basic chords Cmaj7 | Dm7 | Em7 | Fmaj7 | G7 | Am7 | Bm7♭5 |
Cmaj9 | Dm9 | Em9 | Fmaj9 | G9 | Am9 | Bm7♭5(9) |
Dm11 | Em11 | Fmaj11 | Am11 |
Cmaj13 | Dm13 | Em13 | Fmaj13 | G13 | Am13
I'm working on pop chords, and compared to jazz chords, these are simple.
Nice work with that chord overview in PDF.