This list predates the Encyclopedia of Physical Bitcoins and Crypto-Currencies if I'm not mistaken.
Thats correct. Elias started doing a Casascius-only online version, then I believe started considering doing a comprehensive physical book in April '15. I believe I joined the project a year later. But it still took a while until the Encyclopedia was published.
This list is also what got me started in collecting physical bitcoins. I owe my thanks to the OP.
I was excited to have my coins included on the list when it was made. It definitely felt like a bit of a turning point at the time.