You just spent a fair amount of time going over all eight seventh chords, so it would be a good idea to codify all that information into one section where you can see all the chords from the same root and, also, all the formulas side by side. First up is a chart of every possible seventh chord from the root of C in notation.

Now, look at all the formulas as derived from a major scale.

Formulas Derived from a Major Scale

Major Seventh — Cmaj7: 1, 3, 5, 7

Dominant Seventh — C7: 1, 3, 5, b7

Minor Seventh — Cmin7: 1, b3, 5, b7

Minor/Major Seventh — Cmin(maj7): 1, b3, 5, 7

Half Diminished Seven — CØ: 1, b3, b5, b7

Fully Diminished Seven — Cº7: 1, b3, b5, bb7

Augmented Major Seventh — C+(maj7): 1, 3, #5, 7

Augmented Seventh — C+7: 1, 3, #5, b7

You have almost completed your understanding of chords! Now, you will learn about chord inversions.