Can we make a distinction between Shoulder and torso?
Good point!!
Shoulder Turns in TGM concern Flat, On Plane, Rotated. The Torso is related. For example, the players that have so called slice of "pie" at the Top have a different torso position, than those that do not, as advocated by the Stack and Tilt. The Stack and Tilt guys like a Zero Pie, with a steady head at the Top... which looks like 9-1-6.
These types of things along with matching the hip slants, which is mostly controlled by the Knees... is what I am talking about. More detailed Zone 1 info.