I can contribute some stuff to this for sure since I've made a number of Kuroshitsuji costumes.
Coat with tails for Ciel
I've used this one twice with a few additions. It does take a little more sewing know-how, but it's a phenomenal pattern.
Jacket I altered for a male Ciel cosplayer
I removed the front panels at the bottom to create the Volume 6 cover jacket for a commission.
Good Mens vest for Ciel
Jacket for Madam Red
With a little alteration, this one is pretty perfect.
Overskirt for Madam Red
I used the front for my dress and then sandwiched the raw edges between the pieces I made for the bow on the back.
Skirt for Madam Red
This one needs a little alteration because it's not made to go with a bustle pillow, but it's mostly just evening out the hem so that you can put the pleats at the bottom.
A quick pleating tutorial I made for Madam Red
I have more patterns that are usable, but I don't have the numbers right now, so I will edit my post later when I find them.