The debate on the new metadata type "Systematic Theology" highlights the metadata issue I raised some time ago, and your recent response therein.
Now we have the issue of consistency because all type:"Systematic Theology" should have "Theology" as a subject and conversely, those with Subject:Theology should also have type:"Systematic Theology" ...
Currently my rule for the Theology collection is:-
title:(Theolog, Doctrine, Atonement) OR mytag:Theology
because I can't trust subject:theology.
Can I now trust type:theology (accepting that there is more tagging to be done by FL)?
Perhaps you need to refine "theology" in subjects. It currently embraces 99 of my resources, of which 17 belong to type:Theology, 73 are type:monograph, 1 is type:manual, 2 are type:lexicon, 5 are type:encyclopedia, and 1 is type:"Bible Commentary" (A "Theological Survey" of the book of Romans).
EDIT: I have tagged (Mytag) 8 resources as "Theology" of which one now has the new type and also has subject:theology. The other 7 have theology as a subject and may await your tagging as type:theology i.e.

Some are also tagged "Christology".