Hamburger buns are made from a wide variety of doughs. Probably the most popular form is the white bread, made from all-purpose flour (wheat flour from which the grain and germ have been removed). Whole wheat (or wholemeal) buns contain the bran and endosperm that is removed from white bread. My personal favorite is the potato bread bun, using potato as a replacement for part of the wheat flour.
Originating in Vienna, the traditional Kaiser roll is made from wheat flour, barm (fermented foam), malt, water and salt. Since the Kaiser roll is a specific type of roll, variations would not truly be considered a Kaiser. However, certain seeds--such as poppy, sunflower, and sesame--are often sprinkled on top. A hollow Italian version, michetta, is also made.
Cinnamon raisin bread is usually made with all-purpose wheat flour with additional spices. It can also be made with whole wheat (see above). Amish cinnamon bread is made with sourdough, which adds a lactobacillus culture to the mix.