Do all three extraterrestrial regimes in the Dark Extraterrestrial Alliance, the Anunnaki, Reptilian and Arcturian, carry out mind control manipulation of their citizens?

This is universally the case. It is the fundamental tool of tyrants everywhere there is advanced technology in your galaxy. The name of the game is power and control. Those who control information can control thought, and those who control thought can control the individual, what they think, what they believe, and what they will do with their time and energy. It is the ultimate tyranny to manipulate an individual being, from within their own mind, with an ulterior motive to gain an advantage. So it should not be at all surprising that these ultimate predatory races are diabolical to the core, and that includes preying on one another to the extent their individual cultures are each governed by brute force and maintained through an elegant system of manipulations through mind control. This is never questioned by those in power, it is simply how things are done and the citizenry must simply live with this arrangement, doing what they are told or else they will be punished severely, or eliminated.