Analytic practice in Jazz recognizes four basic chord types, plus diminished seventh chords.

The four basic chord types are major, minor, minor-major, and dominant.

Seventh chord on the dominant: Bø, a "half-diminished seventh" chord type.

Seventh chord on the dominant: Dm7, a "minor-seventh" chord type.

Seventh chord on the dominant: FM7, a major-seventh chord type.

This results in two main chord types: the suspended second (sus2) and the suspended fourth (sus4).

The encyclopedia contains 324 different chord types; 27 in each of the 12 keys with thousands of shapes and inversions.

The same chord type may also be voiced:

The chord types here are basically dominant sevenths (root, major 3rd, 5th and 7th) and Shaun goes for notes from the corresponding mixolydian mode in each case.

Still, seven of that song's fourteen chords, including the tonic, are major sevenths or ninths, demonstrating the primacy of that chord type.