Ask HN: How do you generate documentation?

It seems there's a new Open Source documentation generator project out there pretty regularly and I'm sure a litany of paid services to manage better docs. In the past we've used lots of different tools from jsdoc parsers to stoplight; however we're in the need for a new solution that can work well for a very small team.

Primarily looking for:

- API Docs - SDK Docs - Code structure docs (beyond tests and codecoverage)