I believe your choices are New England Clam Chowder (which is delicious from a New Englander) and Chili. I don't think there are others.
There tuna sandwich is also outstanding
Those were the only 2 soups I saw on the menu in December. The New England clam chowder was very good for CS. We ate there twice, it's our new favorite CS in MK. Make sure you go upstairs to eat - very quiet and empty - and you can get great views of the 3pm parade, Haunted Mansion & the Steamboat.