What are some mainstream secular works covering major Christian controversies?
So as the title says, I'm curious about some academic like mainstream work of secular scholarship on major Christian controversies.
What I mean by this is an academic (he can be religious but I specifically am curious about someone without a strong confessional commitment) who would analyse church history (church fathers, apocryphal works included as well as Bible etc...) and the Biblical text itself of course on topics such as salvation and role of faith, Sacraments, works and such, and the big controversies such as the Filioque,Papacy, the Chalcedon controversy, Intercession of Saints, icon veneration... Basically all of it.
The main angle I'm curious at is a critical non commited scholar analysing the complete history of it, but I'm not opposed to if it would include closer analysis of the text or looking at specifically Theological side of it.
So if you are familiar with some mainstream critical scholarships works covering these topics, recommend them to me please!