...So, what "am" I? What labels do I "get", having hereby cited, to the best of my understanding, the primary points and positions of all the sides of the debates here, with in my mind no contradiction whatsoever in any of the above?

If I've understood your position correctly, it's extremely similar to what I would call the "high-level LW metaethical consensus." Luke's sequence on Pluralistic Moral Reductionism, Eliezer's more recent posts about metaethics and a few posts by Jack all illustrate comparable theories to yours. If others have written extensively about metaethics on LW, I may have missed them.