Hacks / Bodges

When I was working in Belgrade our toolmaker had a similar hierarchy.

Dim and lazy - don’t worry about these people, they’re not a problem.
Dim and hardworking - avoid them, they ruin everything
Smart and hardworking- get them to work for you
Smart and lazy - these people rule the world

https://en.wikipedia.org/wiki/Kurt_von_Hammerstein-Equord#Classification_of_officers

As Chief of the Army High Command, Hammerstein-Equord oversaw the composition of the German manual on military unit command (Truppenführung), dated 17 October 1933.

He conceived of a classification scheme for officers:

I distinguish four types. There are clever, hardworking, stupid, and lazy officers. Usually two characteristics are combined. Some are clever and hardworking; their place is the General Staff. The next ones are stupid and lazy; they make up 90 percent of every army and are suited to routine duties. Anyone who is both clever and lazy is qualified for the highest leadership duties, because he possesses the mental clarity and strength of nerve necessary for difficult decisions. One must beware of anyone who is both stupid and hardworking; he must not be entrusted with any responsibility because he will always only cause damage.

This being the guy who got away with telling Hitler to Fuck Off. Twice.