Focusing only on the villain. I'll compare Khan and his actions and motivations to the comparable villains of the other Trek films. They being First Contact, Nemesis and XI
Khan was there first. All the other films you mention were trying to copy The Wrath of Khan
to various degrees. Behind-the-scenes people on Nemesis
were even calling it their "Wrath of Khan".
Remember the old saying: Imitation is the sincerest form of flattery