Truth: Most japanese people dont even know the name of the style of knife they use. Nakiri, santoku, and petty are most common (in the 165mm size and under) as is deba. Also, lately, german knives have become popular in home kitchens for ease of care and lack of skill required to be able to be used. Very few people know how to sharpen. Most people dont even know a lot of the vocabulary we use here on a daily basis (uraoshi, kamagata usuba, koba, machi, etc.)
The vast majority of what we talk about here are professional knives used in professional kitchens in japan or knives specifically designed for the western market.