That link doesn't validate your assertion, unless the stat is deeply hidden. I did see "professional", which has all sorts of categories, including "manager" a

That link doesn't validate your assertion, unless the stat is deeply hidden. I did see "professional", which has all sorts of categories, including "manager" and all sorts of sciences, etc. "Manager" can be someone managing a cleanup crew, a job site, scientists can be on boats, or in the woods, architects at construction sites, on and on. A Walmart has several managers, some of which have no office. A Burger King has a few managers.