Aquinas' Hyalomorphism and the Act of Existence

Historians of philosophy have tried to situate Thomas within a particular school of thought. But Aquinas doesn't belong in any other school of thought but Thomas' school of thought, his own school ofthought. His whole metaphysics of essay or the act of existence is irreducible to influences that came before him. You can see platonic and Aristotelian elements in his views on the act ofexistence but his views are reducible to neither.