Now I write mostly JavaScript (<3 TypeScript) because it's so easy and fast, but having traditional OOP principals in my head is very helpful.
You'll also find many more, much better examples for data structures and algorithms in Java or C#.
Perhaps you might try Lisp or scheme:
I think this is a poor recommendation regardless, because programming in JS really is more similar to modern C# than it is to Lisp or Scheme.
Also, Douglas Crockford is an asshat. How did he wind up an authority on anything?
My thinking goes: understanding classic OOP is helpful in learning JavaScript because the high level concepts are the same but in my opinion more obvious and easier to implement in Java/C#.
By more obvious, a Java/C# (+ others) program starts with a class and to add functionality you either have to add more methods to that class or implement another class. So to a new programmer "duh, everything is an object and objects are instances of a class".
It's kind of hard to convey the same idea to someone in JavaScript when {} is called an object, "xxx" is an object, and to compose a new class, you compose a new function.
However, to someone who already understands classes and objects, it's just a new/different way to create classes and objects.
I've only worked on one application written without any OO patterns, completely procedural, and it was a complete mess.
Adding or extending features caused cascading bugs. Eventually we had to rewrite the backend (PHP) into MVC to be productive. I quit because I dreaded the work. I didn't want to write another line.
I have been pretty interested in functional programming lately, or the functional paradigm everyone in JS is following nowadays, but haven't gotten the chance to take a deep dive yet.