I'm sure that Docusaurus can do a lot, and more in the future. I think the resulting pages feel a little heavy to use (how they load and react in a browser), but that's just my personal opinion.

I had tried to find a tool that would be simple, quick to use, and as close to a static HTML page as possible while still retaining a "book" character. Even a Vimwiki HTML export would have been an option, were Vimwiki's Markdown support better. Mdbooks fit the bill, and does not seem to stray too much from that initial direction, as far as I can tell.