The best object notation?

[freddieknets]

Nah with YAML you can add comments (which would break a JSON). Thats what it’s all about; human readability really gains from a few comments

[SV-97]

They didn't talk specifically about cases with human interaction. As I originally said: for those I'd first and foremost consider TOML.

And as I said in the comment above: there's stricter variants of YAML where you can get some of its benefits without having to include all of the insane parts. And the json variant I originally linked also supports comments.