Isn't that blockchain.com wallet ID? I have a wallet on there, and it's pretty similar to OP's listed. The format is the same too 8-4-4-4-12(random word an number).
If this right, how op can get this list?
You may be right, especially since this format is closer to Blockchain.info web wallet ID than windows GUIDS.
Wallet ID is something like your username; anyone can know your username without an ability to accesses to your coins.
I do not know how @OP got it, but it is easy (someone hack/access email associated to that wallet).