Nice, this will be a great reference for me as I'm learning all my chords. I built a little app the other day to help me practice the chords, you might like it. https://chords.adammenz.com/
Would be awesome to detect chords played on Midi keyboard and score points. I'm thinking of implementing something like that as I need to practice for my music theory course (one from Max Konyi which I really like so far)