User blog comment:DaNASCAT/Template Types: A Smarter Categorization System/@comment-3279487-20151126231030/@comment-126761-20151127152835

I would suggest, roughly:
 * 1) Gallery - mainly contains a gallery
 * 2) Data - used to show information
 * 3) Design - used to create a standard design
 * 4) Navbox - mainly contains navboxes