To be fair I'm very skeptical when I look at those graphs. "80%" progress would suggest me that you're extremely fluent not only in language (as in syntax), but you also have deeper understanding of how it works under the hood (so at least familiarity with the specification + being able to use that knowledge in practice), and probably familiarity with some most popular frameworks/libraries. And I just find it hard to believe (not saying I'm right) you have that much skill in 2 languages (which would take quite some time of actually working as a dev, I think), and not much less in another 4 (~70%). That's a lot. I'd much rather see language + brief overview of skills (frameworks, is it mostly knowing of syntax or you have actually built some larger scale projects with it)