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Full Idea
Three categories of universals: 'substantive' universals have instances that are members of natural kinds of objects or substances; 'dynamic' universals are kinds of events or processes; 'property' universals are tropes of real properties or relations.
Gist of Idea
There are 'substantive' (objects of some kind), 'dynamic' (events of some kind) and 'property' universals
Source
Brian Ellis (Scientific Essentialism [2001], 1.01)
Book Ref
Ellis,Brian: 'Scientific Essentialism' [CUP 2007], p.18
A Reaction
I would want to distinguish real properties from relations. It is important to remember that an object can traditionally instantiate a universal, and that they aren't just properties.