They should be numbered in here based on how they are on the card itself. As I look at the handy dandy FAQ we have this (emphasis mine):
"Cards with numerical card numbers should be sequenced in numbered order based on the card number (ie. 1, 2, 3, etc.)"
Card that are unnumbered should be arranged in alphabetical order by last name, first name of the subjects that appear on the cards or by alphabetical order of the title of the card if no names are present. Exception can be given to non-numbered releases where the card manufacturer has published materials reflecting a specific order to the cards.
Tired and trembling
I am descending,
will I have to stay here
and live this life again?