Thanks everyone!
The Hemnes 4 drawer shoe cabinet is 22cm deep - this would be ideal. I was hoping for an extended version of that.
I don't have many coats and jackets - probably five in total.
I would store shoes and coats I don't use regularly elsewhere. The hallway storage would be for a few items that I use the most, plus for when guests come over.
If I can't do some kind of hack, I may have to bite the bullet and get the Hemnes shoe cabinet for the hallway and then have a coat rack in the living room. I think coat racks can look quite messy though!