I thought this was a great read as well.
BUT...some of the rules have changed since this was done. The article states that flat leaf parsley and cilantro are illegal. I don't know for sure if that ever was true, but it isn't true now. Rule 9 of the official KCBS rules states
9. Garnish is optional. If used, it is limited to chopped, sliced,
shredded or whole leaves of fresh green lettuce, curly parsley,
flat leaf parsley and/or cilantro.
Kale, endive, red tipped lettuce, lettuce cores and other vegetation are prohibited. (Improper garnish shall receive a score of one (1) on
Appearance)
