Why no Grip Department category

Does anybody else find it strange that there is no classification for the Grip Department in the crew listing on a Film or TV Show? The Grips are found in a category of Camera and Electric. While Grips work closely with the Camera and Electric departments, they are a separate and well recognized department. I don't think IMDB can be looked at as an Industry Standard when they don't seem to understand the basic differences in Departments. The heading of that classification could simply be Camera, Electric, and Grip Departments. I am very surprised that they can't make a simple, accurate change to an obvious oversight.