Some of these styles are generally accepted, while others are subject to the researcher. It is your right to disagree, of course, but that's what makes things interesting. In addition to the various styles, there are several sub-groups within the styles. Besides that, many of the styles could have several different materials for the facade: brick, wood, concrete (or cinder) blocks and stucco. With all these different possibilities, the bungalow could be like a snowflake - no two are exactly alike.
Bungalow Shapes and Orientation