Role model (7)
(Other definitions for example that I've seen before include "Thing characteristic of its kind" , "Instance or illustration" , "Standard" , "Case in point" , "Characteristic item" .)
(Other definitions for exemplar that I've seen before include "Something serving as an appropriate model" , "Model to be followed" , "A model or instance" , "A good model or type" , "Ideal model" .)