I am using Hugo, because I found good documentation on integration with github and netlify. Hugo is the only gen. I have used.
It allows me to push my .md file to github and netlify builds the page. I also liked their template library. I am sure there are others, but as I implied, documentation goes a long way, when time to invest on trial an error with peripheral technology is limited.
Thanks for compiling the list and the suggestion by others, I will definitely look at some of them, Gatsby is one I see show up a lot, and I like the idea of a Python base generator like getnikola