Currently only rich text content controls are available through Word API (https://docs.microsoft.com/en-us/javascript/api/word/word.contentcontrol?view=word-js-preview#word-word-contentcontrol-type-m...
+1
I would also be very interested in dropdown support.
I was able to develop a working prototype of my application in VBA, but now I need to rewrite it in JS for production.
I filled out the survey form.
Thank you