Slim, you quite correctly define the non precision approaches, but an NDB approach is indeed different from a "Locator" Approach. The latter is entirely different again from a "Localiser" approach.
A "Locator"Approach is one based on the primary aid of a Compass Locator, and has nothing to do with the lateral guidance provided a stand alone Localiser, or the Localiser portion of an ILS.
Perhaps I miss read your post, but just wanted to clarify in case there was confusion.