While heterocissexism encompasses gender identity, sexual orientation, and misogyny/misandry, it leaves out other things that people may be discriminated against for, which may or may not work concurrently with gender identity, sexual orientation, and misogyny/misandry to produce discrimination, judgment, condescension, hatred, or violence. It also confers privilege onto too broad a group.
I propose this term:
Straight white non-disabled people in power who are HIV-negative, cisgendered, and misognynist or misandrist.
This isn't an attempt to be cute, I really believe heterocissexism is too broad a term, conferring the notion of 'privilege' onto non-white people, poor or un-influential white people, etc.
Exousia - I don't agree with the term patriarchy, I never have. I looked up exousia and google says it can refer to authority to rule, moral authority, or influence. Moral authority covers slut-shamers and people who look down on sex workers, and those who blame victims of rape.