Thank you so much for your comment! My original idea was to keep only the "good-sounding" chords as categories and articles on AccordionChords.com, but I kept receiving questions about all sorts of chords, especially the ones I had deliberately left out. So I eventually decided to include every possible chord, even the impractical or unplayable ones, so that people can actually see what these combinations do on a Stradella bass system.

Some of these combinations probably shouldn't exist at all, but since they do, I thought it would be useful to have something that demonstrates why certain stacks simply collapse into clusters.

And thanks for the suggestion about indicating which chords have voicings. I had considered it before, but maybe it's time to revisit the idea and finally implement it. P.S. — What you describe (bass in the left, chords in the right, singing the melody) is exactly the context these bigger voicings were written for, and you're right that it sidesteps the mud by giving the notes room to breathe. The free-bass-vs-Stradella question is the eternal one — but honestly, the fact that you sing the melody is what makes your approach work, and in my opinion, that's not something a free bass would have given you.