Crystal Palace is a very nice one (Winnie the Pooh and friends). We also love the Princess Storybook Dining at Norway (Princesses, includes a portrait, usually with Belle in her yellow gown). My kids love the Playhouse DIsney breakfast at Hollywood & Vine. They have CMs who lead the kids in dances and activities in addition to the characters. If you get an early ADR at any of these, you get early park entry. The rides won't be working and certain sections will be roped off, but it's a great opportunity to get pictures without a crowd of people around.
Often forgotten, we also like the breakfast buffet at Cape May Cafe (classic characters in beach attire).
I'm glad to hear the good reviews of the 'Ohana breakfast. We're trying that this time for the first time and for a change. We haven't particularly enjoyed the dinners at 'Ohana, so I hope we like the breakfast!