In C++ how do we call everything with a valid X(Args...) syntax that execute a function?

In C++, there is a Callable concept as well as the std::is_function type traits. I was wondering how the standard calls X, when the exact expression

X(Args...)

is valid and corresponds to a call (excluding constructors and C macros). For now, I can think of:

• functions: R(Args...) (with optional const, volatile, &, && qualifiers)
• function pointers: R(*)(Args...)
• function references: R(&)(Args...)
• functors (struct/class with overloaded operator())
• lambda

My questions:

1. How does the standard call X?
2. Did I forgot something in my list?