Haven't been to Carnation Cafe yet for breakfast, but they have removed some people's favorites, added a few things, and made some changes even to dishes they chose to keep. There is no other sit-down wait-service breakfast served in
Disneyland, so Carnation Cafe is it if that is your requirement.
As for other Disneyland breakfast options...
Minnie's Breakfast at the Plaza Inn is a character meal buffet. Payment up-front. Self-serve food and drinks. CMs bus the tables. Many characters will visit you at your table during your meal.
Jolly Holiday Bakery is counter service. Coffee, hot chocolate, etc. Cinnamon rolls, croissants, pastries.
Tomorrowland Terrace - counter service. Hot food choices such as breakfast burrito, eggs and bacon, or french toast triangles.
Riverbelle Terrace - counter service. A favorite for its Mickey Mouse shaped pancakes. Also serves regular pancakes, eggs and bacon platters, and cinnamon rolls.