I think the best example would have to be Lee Kuan Yew of Singapore. Despite implementing certain harsh/autocratic rules and suppressing political dissent/opposition the economic success of Singapore during his time as prime minister is legitimately staggering. Under his leadership it went from a colonial holding, merged with Malaysia, then split from them and despite being a tiny, heavily dependent (for food/water) city-state went on to become one of the richest, safest, most developed countries in the world.

Not that I personally agree with those politics, but its hard to argue with that level of success, if its done right (and under the right conditions) benevolent authoritarianism can definitely get shit done.