The reason for first selecting these were that these were converted into kegerators by others and provided sufficient space for corny kegs. When looking at them in person, I was able to confirm that the freezer appears to be removable in the Frigidaire, providing a clearing from the bottom shelf of about 20 inches. The Danby doesn't have a freezer and has a similar clearance. Also, there are floor models near me where I was able to take measurements to knock out any unsuitable models. Lastly it seems that if I'd be willing to cut the door milk shelf, that there will be an abundance of space.
I still need to check with a fermentation bucket and carboy to confirm space, but that's where I am at in my perusing.
ETA: Just to be clear, I believe that even without cutting into the door that if I remove the freezer from the Frigidaire that a bucket will fit. Again, I need to bring the bucket and carboy in to confirm.