Thomism, though not non-dual inside the common perception, considers the unity of God so complete that even the duality of subject matter and predicate, to describe him, can be real only by analogy. Which is only my own viewpoint of course, but I must say Neti, Neti to just about https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw