Looking for a Small Dulcimer
Instruments- discuss specific features, luthiers, instrument problems & questions
I have two McSpadden Gingers, which I love. You can have them set up for standard D tuning. They check most of the boxes you have listed. They are quality made, sound great, and are a joy to play.
Also, in the groups, check out the "Little Dulcimers" group, where you'll see a "Little Dulcimers Little List". Very helpful when looking for a smaller dulcimer.