I'm assuming you meant statically/dynamically type checked languages.

Generic functions to not ignore types. An `inThere::a list -> a -> bool` very much enforces that the list passed in, as well as the element have the same type. With a sufficiently powerful type system, this allows for statically checked code that's not much less flexible than dynamically checked code.

Observing current developments in Python, but also Rust gives me the impression that dynamically typed languages were more a reaction to the very weak type systems languages like C or Java provided back in the day. A lot of Python code has very concrete or rather simple generic types for example - Protocols, Unions, First-class functions and Type parameters handle a lot. The tools to express these types better existed in e.g. Caml or Haskell, but weren't mainstream yet.