Opinionated advice: go full Python or Javascript! Being exposed to first class functions and higher order functions, without needing to wrap your head around OO

Opinionated advice: go full Python or Javascript! Being exposed to first class functions and higher order functions, without needing to wrap your head around OOP or even simple things like code blocks gives you a clear and "functional ready mind": after Python you can jump into Javascript or just as well into Haskell. From Ruby you have a little "baby wall" to climb when you go out of it to the larger world.