The Mouvement Synarchique d'Empire (M.S.E.), a 1922 network of French elites.
The engine treats it as a documented example of experts and insiders quietly taking over administration, while being careful not to overstate it as a single all-controlling cabal.
According to a 1941 government report (the Chavin report), a man named Coutrot founded roughly nine front societies used to recruit cooperative intellectuals and slot them into government administration.
It's a concrete case of technocratic infiltration of the state — but the engine flags that the bigger conspiracy claims about it are historically disputed and refuses to treat it as one unified controlling force.