To help contribute: maize, wheat, and beets have seeds. Also two not on your list that do have them are turnips and chiles (separate from peppers). I believe carrots do as well but not 100% on that.
Currently at least, none of elderberry, schisandra, acai, cocunut, or aloe have given any seeds while harvesting. I believe it's basically the veggies/grains atm and not fruits or berries.