https://github.com/pinceladasdaweb/Static-Site-Generators
https://staticsitegenerators.net/
I keep all my resources for working with GitHub Pages, here:
https://infominer.id/web-work/github-pages-starter-pack/
and am most familiar with GitHub facilitated Jekyll:
https://github.com/planetjekyll/awesome-jekyll
MkDocs makes really nice pages that don't require fussing around with frontmatter, with auto generated navigation based on directory structure.
It also opens your publishing toolkit to python's universe of markdown related extensions, which you may already be familiar with.
https://www.mkdocs.org/