Definitional/Categorial: Is X a Y?
Disagreement over the nature of a thing or its inclusion in a category (occurs when one disagrees over the definition of either X or Y)
Evaluative (Quality/Value): Is X good or bad? Is X a good or bad Y?
Disagreement over values, importance, or worthiness
Resemblance (Fact/Conjecture): Is X like Y?
Cause/Consequence Will X cause Y? Is X caused by Y?
Proposal (Policy): Should we (not) do X?