The difference is, Kizaru does NOTHING to try and rebel against the navy. He doesn't doubt them AT ALL. He sucks the CDs off and when they ordered him to murder his best friend he did it just as they commanded him to.
The people you listed have been shown doubting their captains/superiors and Zoro even says he would leave the crew or usurp Luffy if he's not up to his standards. He would never kill Kuina or Koushirou if Luffy ordered him to, while Kizaru killed Vegapunk the moment Saturn told him to.
The people you listed have been shown doubting their captains/superiors and Zoro even says he would leave the crew or usurp Luffy if he's not up to his standards. He would never kill Kuina or Koushirou if Luffy ordered him to, while Kizaru killed Vegapunk the moment Saturn told him to.