The current difference in the US context is bureaucratic authoritarianism vs autocratic authoritarianism. They're both authoritarian, and they're both oppressive and stifling. But their actual specific dynamics/mechanisms/effects can be quite different. For example autocratic authoritarianism has a much higher variance (for better and for worse) - look at the current autocrat in the White House coming up with idiotic ideas by the week/month, It's done in the name of unchaining greatness, and it would be nice if that were indeed the outcome. But in reality the chaos from the unrestrained terrible ideas is actually quite stifling. Whereas bureaucratic authoritarianism is more of a beige tyranny of the mediocre, which creates a drag on greatness, but at least provides a stable foundation for building on (as long as you can outrun the bureaucrats)

(disclaimer: I've gotten more conservative as I've gotten older. It will happen to you, too)