If you're hell-bent on headless, I can personally recommend 11ty (https://www.11ty.dev/ https://www.11ty.dev/) and hugo (https://gohugo.io/ https://gohugo.io/).

If you're hell-bent on headless, I can personally recommend 11ty (https://www.11ty.dev/ https://www.11ty.dev/) and hugo (https://gohugo.io/ https://gohugo.io/). That said, for non-technical admins, you probably want a user interface. For that, Ghost (https://ghost.org/ https://ghost.org/) and Grav (https://getgrav.org/ https://getgrav.org/). Or Wordpress!