Are there just 4-6 types of themes?

I have been reviewing Hugo themes to pick something for a non-blog site and it appeared to me that one can roughly classify all themes into the following categories:

  1. blog-like one (Ghostwriter) or the two (Hyde) column
  2. documentation themes (Alabaster)
  3. bootstrap-like with top horizontal menu
  4. landing page with centered elements (hello-friend)
  5. graphically intensive themes
  6. precursors (Paper, Classless)

Some themes (like kraiklyn) combine a few things.

These types kind of mix the structure/appearance and purpose, but they look like a viable way to classify themes and make a selection easier.

Two questions:

  • do you think this classification may be enhanced? something that helps a newcomer to navigate through the themes?
  • do you know any resources/charts that show some genealogy of the themes and their ports across platforms (Wordpress has thousands, Jekyll/Hugo just first hundreds)?