Themes:

Good for company:

• https://themes.gohugo.io/themes/hugo-universal-theme/
• https://themes.gohugo.io/themes/gohugo-theme-ananke/
• https://themes.gohugo.io/themes/hugo-theme-massively/

Good for documentation:

• https://themes.gohugo.io/themes/docsy/

Nice Effect

• https://themes.gohugo.io/themes/hugo-theme-air/

Simple

• https://themes.gohugo.io/themes/hugo-theme-monochrome/
• https://themes.gohugo.io/themes/hugo-papermod/

A3ir.com theme options: (private)

• https://themes.gohugo.io/themes/minimo/
• https://themes.gohugo.io/themes/cupper-hugo-theme/

Thepragmaticai.com (public)

• https://themes.gohugo.io/themes/gohugo-theme-ananke/

Company

• https://themes.gohugo.io/themes/up-business-theme/
• https://themes.gohugo.io/themes/hugo-fresh/