There is no such thing as a leftwing libertarian. That’s what makes that 4 square political graph bunk. Not a single person on the left believes people should be free to live their lives and accept responsibility for the choices they made in their life.
I agree with what you said about there being a leftwing libertarian. Your statement on what they believe concerning individualism, I have a minor disagreement with. When I listen to these leftists, they firmly believe that people should be allowed to be gay, trans, have abortions, and any other type of deviant behavior. To them, that is individualism. When one points out they disagree, that there should be constraints to deviants, then they want to squash that type of individualistic thought.