Well, of the remaining list of artists..

1.a)Kaori Yuki
  b)Yu Watase
  c)any member of Clamp (lol)

2.a) Angel Sanctuary
  b) Fushigi Yuugi
  c) X (1999), RG Veda, or Rayearth

3.a)Kira, Rociel, or Setsuna
  b)Nakago, Nakago, Nakago.. or Hotohori (lol)
  c)Kamui or Nataku for X, Yasha for RG Veda.. or 
Clef from Rayearth OVA... ^_~

I would have listed Chiho Saito but.. Saionji 
sits in my gallery!  ^______^