I would recommend adding Doks to the list - https://getdoks.org/ Doks is an opensource documentation and blog theme. Looks amazing.

Hugo is fun and very extensible. I love that it is a single-file binary that I can download and use without bothering about dependencies.

When I moved away from Jekyll, I built a Hugo theme for my blog as my first for-profit hobby project - https://define.run/lucid-theme/