BitBox01, Mycelium Entropy, Ledger Nano, ???, Ledger Blue.

Although I worked for Mycelium, I only had the Ledger Blue of these.

That 4th device ... I'm curious. Somewhere around 2014 I think somebody bought bitcoin from me using a device like this but it had a black and white e-ink display, a camera and a GSM chip that was supposedly paid for globally for many years. 

 Yep, it's a Case Wallet.

Great concept but poor execution.

https://blog.lopp.net/case-wallet-review/ 

 The KeepKey was one of my biggest disappointments. 

 It's a Trezor clone. Bigger display. The company went all in on shitcoins, so yeah, ... not great. 

 After Shapeshift bought it they forced you to use their website with the exchange built-in. It was a real pain in the ass for me to use and I had to end up importing the seed phrase into Electrum to get everything out of there. 

 Their website is down. At WalletScrutiny we list it as "defunct". Do you know if it still works or does it rely on their server infrastructure that is gone now? 

 It relied up their server infrastructure. 

 Great timing lads. Today @dakript will post a fun prize game for you guys! 

 It was Digital Bitbox originally, renamed to BitBox01 in late stage.
I haven't seen 2nd so far
Ledger Nano Classic.
3rd one a mystery to me - thanks!
Ledger Blue - known for poor battery issues