Keep in mind with the shorter ones people with enough computing power can generate them with a little work and time

1EEoqxSat3 followed by the rest of an address can also be 1EEoqxSat3 followed by the rest of another address with less then a months worth of GPU computing power. And with all the GPU rigs not doing much after ETH went PoS there are a lot of them out there not doing much.

Also I have noticed at times when using walletexplorer.com, it will give the 1st address of what it finds not all of them.
There are a lot of 1nasty addresses but it does not show all of them.

-Dave