The document discusses different types of sponge and cake classifications. It describes shorted cakes like pound cake and butter cake which contain high percentages of fat. Unsweetened cakes called foam cakes are made without fat, including sponge and angel food cake. A modified sponge cake called chiffon cake is a combination, using liquid shortening and separated egg whites and yolks. Other cake types discussed include petit cakes, tortes, and gateaux.