Yikes! My heart sank when I saw the list.
Ugh. I'm not a collector of physical
BTC coins, but I had much the same reaction.
I'm not trying to be nosy, but are you in/near San Francisco by any chance? You said the manager was letting homeless people in the storage facility and I just saw a mini-documentary about how bad SF has become, and I was blown away just looking at the footage. Not sure what the lockdown period is that you mentioned, but still. You've got my sympathy, buddy and I'm sorry for your loss.
Wow. I did search a few of these firstbits on walletexplorer, and they look like they are all peeled, or at least the rando ones I checked. This is terrible, I can't even imagine. sorry man.
I fuckin hate scammers and thieves.

Yup, I've been scammed before (but nowhere near the magnitude of this) and it made me feel fucking violated and furious beyond belief. Any chance the funds from the peeled coins can be traced and used to track down the perps? It sounds like OP's local law enforcement doesn't give a shit, but if he's got a lawyer involved, that lawyer ought to be advocating for him.
Edit: By the way, this crime seems like it's a hell of a lot more than burglary. It sounds more like grand theft robbery or however robbery is classified.