The KAQ design is asym. To my knowledge the others are not. Not to confuse asym with differential. Although I think an asym differential quilt might be a more advanced form of engineering than I would care to tackle.
The v-shaped cuts in the KAQ design are to accommodate the tieouts on the HH. The holes for the tieout lines are located at the vertex of the sewn up V. It helps with the KAQ desgn to tie out the sides on the HH more horizontally than if the quilt is not being used.