Where did you find this sheet? Are all compatible SSD's on there?
It's linked in post #4. Just looked up the labeling that you can see in the photo.
The datasheet is just about Western Digital PC SN520 NVMe SSDs.
But since the Deck has an ordinary M.2 slot, in theory any M.2 SSD is also compatible. You could even connect a 2242 or 2080 with an extension-flatband cable (adapter) and it would probably work.
The only thing that matters for the Deck is the form factor. As you and @RuderLaplace
pointed out, "fat" SSDs are not a good idea. But as long as it's a "single sided" M2. 2230 SSD, there shouldn't be any problems.
Keep in mind, that you have to transfer the shielding to your new SSD to avoid interference.