MDT at Paragon Home Inspections, LLC wrote:

By "half roof", are you referring to the sloped portion of the ceiling
above a knee wall, like the portion to the right of the knee wall in
this illustration?

Looks more like the left side of the illustration in your first post.
The loft area is under the upper portion. Most of the room is below the
rest. It's easy to reach the ceiling up there. There probably is still
insulation in the rest of the run toward the bottom. After all, what
would a raccon do with it anyway...