Here are the classes, structs, unions and interfaces with brief descriptions:

Nrttr
Cargument	The argument class is used for forwarding arguments to properties or methods
Carray_range	The array_range class provides a view into an underlying data structure with lower and upper limits
Cassociative_container_mapper	The associative_container_mapper class is a class template to access an associative container via one common interface
Cbasic_string_view	The class template basic_string_view describes an non-owning reference to a constant contiguous sequence of char-like objects
Cconstructor	The constructor class provides several meta information about a constructor and can be invoked
Cdestructor	The destructor class provides a destructor for registered types
Cenum_flags	The enum_flags class template is used to store OR-combinations of enum values in a type-safe way
Cenumeration	The enumeration class provides several meta information about an enum
Cinstance	The instance class is used for forwarding the instance of an object to invoke a property or method
Clibrary	The library class provides a cross platform way of explicit loading shared objects (.so on Unix based system and .DLL on windows)
Cmethod	The method class provides several meta information about a method and can be invoked
Cparameter_info	The parameter_info class provides several meta information about a parameter
Cpolicy	The policy class contains all policies that can be used during the registration of reflection information
Cctor	The ctor class groups all policies that can be used during registration of constructors
Cmeth	The meth class groups all policies that can be used during registration of methods
Cprop	The prop class groups all policies that can be used during registration of properties
Cproperty	The property class provides several meta information about a property and gives read/write access to its value
Cregistration	The registration class is the entry point for the manual registration of reflection information to the type system
Cbind	The bind class is used to chain registration calls
Cclass_	The class_ is used to register classes to RTTR
Csequential_container_mapper	The sequential_container_mapper class is a class template to access an associative container via one common interface
Ctype	The type class holds the type information for any arbitrary object
Cvariant	The variant class allows to store data of any type and convert between these types transparently
Cvariant_associative_view	The variant_associative_view describes a class that refers to an associative container (e.g: std::map) inside a variant
Cconst_iterator	The variant_associative_view::const_iterator allows iteration over an associative container in a variant
Cvariant_sequential_view	The variant_sequential_view describes a class that refers to an sequence container (e.g: std::vector) inside a variant
Cconst_iterator	The variant_sequential_view::const_iterator allows iteration over an sequential container in a variant
Cwrapper_mapper	The wrapper_mapper class is a class template to access different wrapper types via one common interface