Can someone give a run down of the popular ways of thinking about ethics and which meta-ethical theories claim that only some things are permitted? I've read a couple of SEP articles on ethics, nothing much more, and so my question is a bit limited, but I'm not directly asking about 'truth' or "objectivity", only which philosophers out there would agree.
In light of any answer, philosophers which say only some things are permitted, I'm wondering which of them say that everyone is right about what is permitted, which meta-ethical theory allows for both.
I'm guessing some species of relativism might allow them both, but I'm not sure.