That's one outstanding collection. You have a few that make me jealous. (Pain and Panic autographs, in particular; and, of course, Rabbit.) I don't have our list with me, but I can only think of a few that I don't think I see on your site that we have.
Tarzan & Jane Porter
Roger Rabbit
Brer Fox
Pacha (Emporer's New Groove)
Shang and Shan Yu (from Mulan)
Milo Thatch and Vinnie (from Atlantis) They may never come out again. We caught them in front of the Sorcerer's hat before the Stars and Motorcars parade (back when there was an Atlantis car, when the movie was fresh)
Doug & Peppermint Patty (probably gone forever)
Raggedy Ann and Andy (not really Disney Characters - but we got their autographs at a Christmas Party)
I've seen autographs online of Jose Carioca and Panchito from the Three Caballeros (but I've never personally seen them in the parks.) I've also seen a photo of a Mogli meet and greet character.
You've got a great collection!