Sure, I'm primarily a C# programmer which does have a dynamic type object, and occasionally use VB which uses late binding and can use dynamic typing as well.

You want to know how often I find dynamic typing the correct tool for the job? It's literally never.

Dynamic typing does allow you to do things faster as long as you can keep the whole type system in your head, which is why JavaScript was designed the way it was. That doesn't mean it is necessary to do any of those things, or is even the best way to do it.

I think C# has first class functions. Any pure function you can pass around. And you can create lambdas.

gcc has nested functions that can act like a closure.

And Clang has blocks.

What are you talking about, the majority of functional languages have static types.