Full Idea
Lowe's Ontological Categories: ENTITIES - {Universals - [Kinds - (Non-natural)(Natural)] [Properties, Relations]} {Particulars - [Abstracta - (Sets)(others)] [Concreta - (Objects)(Non-Objects)]} etc
Gist of Idea
Lowe divides things into universals and particulars, then kinds and properties, and abstract/concrete
Source
report of E.J. Lowe (The Possibility of Metaphysics [1998], p.181) by Jan Westerhoff - Ontological Categories §01
Book Reference
Westerhoff,Jan: 'Ontological Categories' [OUP 2005], p.14
A Reaction
[my linear representation of a tree diagram; bracket-styles show levels] Lowe's levels below these divide according to whether things are 'substances' or not. I've heard Kit Fine tease Lowe for being too simplistic about ontology.