Which forms of government keep the power for themselves and allow less of that power to be in the hands of the people?

It might be
more nearly correct to state that democracies in their several forms are the ONLY governments
that allow ultimate power in the hands of the people; in fact the name implies as much.
Dictatorships, autocracies, oligopolies, theocracies, etc. place power in the hands of the few,
or a single person. Ironically, with the exception of some of the Greek City-States, democracy
is historically an anomaly in governments. The common belief for many years was that the people
were incapable of competently governing themselves. Alexander Hamilton, in a letter to Robert
Morris commented:

It has been observed that a pure
democracy if it were practicable would be the most perfect government. Experience has proved
that no position is more false...

href="https://en.wikipedia.org/wiki/Democracy">https://en.wikipedia.org/wiki/Democracy