To indicate an exemplar or someone well-respected within their own group or occupation, sometimes you see expressions like "man's man" or "lawyer's lawyer." Is there a name for this construction?
This isn't to be confused with someone who provides a service serving another in the same profession, like a lawyer defending another who's been sued.
Some examples of the expression:
Enter Jack Tobin, a former Miami defense lawyer who made so much money “defending insurance companies in personal injury actions” that he retired early ... As the title of James Sheehan’s engaging thriller makes clear, Jack is a “lawyer’s lawyer,” and the case against the convict, Thomas Felton, cries out for a second look.
As I later learned, Peter was a real editor’s editor, having mentored and trained writers who would become key staffers at some of New York’s most important and respected media organisations, from The New Yorker to The New York Times.
Detective Brenda Leigh Higgs, a 15-year veteran, called Chief Johnson "a policeman's policeman" who "hasn't forgotten what it's like to be a policeman on the street."