I think it’s probably best to instead have an entry on “Normative uncertainty” in general that has sections for each of those concepts, as well as sections that briefly describe (regular) Moral uncertainty and Decision-theoretic uncertainty and link to the existing tags on those concepts. (Also, the entry on Moral uncertainty could discuss the question of how to behave when uncertain what approach to moral uncertainty is best, which is metanormative uncertainty.) This is because I think there are relatively few posts specifically on Metaethical and Metanormative uncertainty, and some of those that there are are also relevant to other types of normative uncertainty in a broad sense.
But it’s possible that “Normative uncertainty” is best defined as uncertainty just about regular normative ethics, such that it shouldn’t be seen as covering metaethical and metanormative uncertainty. And it’s also possible that, in any case, those concepts are important enough to warrant their own entries.
Metaethical uncertainty and/or Metanormative uncertainty
These concepts are explained here.
I think it’s probably best to instead have an entry on “Normative uncertainty” in general that has sections for each of those concepts, as well as sections that briefly describe (regular) Moral uncertainty and Decision-theoretic uncertainty and link to the existing tags on those concepts. (Also, the entry on Moral uncertainty could discuss the question of how to behave when uncertain what approach to moral uncertainty is best, which is metanormative uncertainty.) This is because I think there are relatively few posts specifically on Metaethical and Metanormative uncertainty, and some of those that there are are also relevant to other types of normative uncertainty in a broad sense.
But it’s possible that “Normative uncertainty” is best defined as uncertainty just about regular normative ethics, such that it shouldn’t be seen as covering metaethical and metanormative uncertainty. And it’s also possible that, in any case, those concepts are important enough to warrant their own entries.