I would prefer almost any of the alternatives you mentioned to yaml for most places it is used. Except for json, due to lack of comments. Although for things w

I would prefer almost any of the alternatives you mentioned to yaml for most places it is used. Except for json, due to lack of comments. Although for things where you have ifs, loops, etc.like CI pipelines and ansible, it really should be using a fully featured language instead of definig a new mini-languagr inside of yaml. Yes, none of those are perfect, but that doesn't mean none of them would have been a better choice.