What are the categories of blogs?

Generating a blog is one of the most sought-out ways of marketing in today's world. Interesting content coupled with an innovative style goes a long way in making an impact in people's minds. It is one of the most interactive marketing modes used for personal commentary or business content. There are various categories of blogs: 
Food 
Travel 
Lifestyle 
Personal Finance 
Photography 
Political 
Religious 
Movie and cinematography 
Sports 
Interior Design 
Fashion and Beauty 
DIY Craft 
Health and Fitness 
Parenting 
News 
Music 
Business 
Art and Design 
How-To Guides 
It is an endless list, and it is totally up to the creator to decide the area he wants to cover.