The following ingredients contain soy proteins.
Soy fiber, flour, grits, nuts, sprouts
Textured vegetable protein
Source: Food Allergy Initiative
All types of soy are in a LOT of things, from foods to cosmetics, read the labels! If ever in any doubt call the manufacturer. In my dealing with calling companies they have alway been friendly. If they aren’t friendly you can always leave the product on the shelf.