As a Rails engineer with 14 years experience, I can say the place that should be in the 3rd panel is Shopify. They employ so many ruby and rails core committers and directly fund a good many rails gems, and ruby community infrastructure it's insane. They're also directly funding the development of things like the YJIT and speed enhancements to MRI itself.
Then there's all the other places I know or worked at built on Ruby where my other long tenured ruby friends work.
Ruby was recommended to me by my comparative programming languages professor. I haven't picked it up, but there were memes that this professor was so good at programming he was secretly built by the university in C++ to teach students how to write better code.