So, for those who are used to an Oldstyle - Transitional - Modern spectrum for serifed typefaces, with Slab on the side....
How do you classify Cambria?
The stress is vertical, or so close as to be imperceptibly different. But the contrast is quite mild, and the serifs are massively bracketed. I am inclined to say that it has elements of oldstyle and modern so it ends up being: (1) transitional...-ish; and (2) a fine exemplar of the problems of type classification.