I keep some dried beans and rice ( Instant and regular) separately in 2 quart canning jars that are vacuum sealed and have oxygen absorbers in them. I also put larger quantities into mylar bags with absorbers. Mylar bags then go into buckets. When the jars are empty, I refill from the buckets.
Beans will get harder over time but I have found that soaking or cooking them in an instapot takes care of the toughness.
I don’t do freeze dried but would use it if I did a large meal of beans and rice and had leftovers.
I have made soups with beans and rice, and put it in the dehydrator on the fruit tray. After they dry out to a scab like consistency, I blend in a food processor. These powdered soups are vacuum sealed individually and go in my stash. Sausages, such as Kielbasa and Summer do not dehydrate well.