A dictatorship has a dictator. Who doesn't know that?

TBH modern dictatorships are a lot less obvious in the way you describing.

There are dictatorships, where a very select few people have absolute power, but there’s no visible dictator.

Iran is a country like this. There’s no visible dictator. It’s a game of power between the clergy, the military, and the civil government.

Those are more like aristocracies or oligarchies than dictatorships though. Though maybe those are not the best descriptions of Iran either

There is a long tradition of calling rule without care for the ruled 'tyranny'. Aristotle considered this the worst perversion of the best form of government, i.e. monarchy.

What? Tell me the similarities :) There is not strong-willed, controlling figure or imposed ideology, the financial institutions are fairly independent, in general journalism is relatively free to choose topics, the federal states can be pretty independent from the central power if they choose to do so, and all the rest I already wrote in a sister comment. Note I did not compare this to any country, just applying criteria for dictatorships.

I lived in a dictatorship, I can’t tell the difference. Is exactly the same for the average Joe.