[invaliduser]

Actually, a language not having a class system does not mean it's not object-oriented. Javascript prior to ES6 did not have a class system, but was OO. Classes are just one of many ways to implement objects in a language (just saying, because you mention go & rust)

[grahamburger]

Yeah for sure. I should have specified class based. Regardless, I think those languages place much less emphasis on OO than, say, Java or Ruby, right?