Minor spelling error on your title, though. Should be Eye Types. Stated for the different types of the optical organ referred to in English as an eye.
Sorry for the nerd moment. Just thought you might want to know. Awesome work, none the less. You might also be able to make a part 2 for this, using an "on character" demonstration of each eye type that you've used on for your character's faces.
If so, you could just crop out images you've already done for each one. Worth a shot, I believe.