Naruto Taxonomy

Naruto avatars organized according to a strange classification system on the Pony blog.
Having just seen War Against the Weak, was reminded of the elaborate genealogies of the "defective" Juke and Kallikak families lovingly and meticulously put down by insane racist American scientists in the early 20th Century. Or maybe that's too much of a stretch.
Found serial art, at the very least.
Bonus: ponies.