Update:
I received the drives today. These were both WD 14TB Easystore externals from BestBuy directly. I plugged the drives in via their USB and powered just to see if they worked and see any info on them. Then used that information to look up what these drives
might be. The drives are identical, and both show made in March/April of this year. Here's the info:
Model: WD140EMFZ-11A0WA0
Found this info and it matches this it seems:
www.reddit.com
Here's the CrystalDisk info on each:
And after I verified they worked, I shucked them and it was pretty easy to do it without any damage with some thick cards. I put them into my FreeNAS server and booted up. They did not spin up on their own with my EVGA BQ PSU, so the 3.3v thing matters on these. I already had a molex -> sata adapter, so I used that, and they spun up powered just fine. So that part still applies. They are missing their middle screw hole on the sides as I found in other threads, so I had to do a slight modification to my HDD cage holding bits but that's simple and doesn't matter much.
FreeNAS happily saw them, used them and I built my first pool with them. I started copying data and using them to see how things behave and will keep monitoring how they act for a while.
Very best,