The shag cuts will always have the highest nicotine content as their smoke is more concentrates, two great examples are Five Brothers, a burley and SG Dark Birdseye, a VA. Perique is high as it is so processed in it's own juices so a VaPer will be very high. An English unless it is Va dominated tends to be less in "N" and most aromatics use a lesser quality of leaf from the bottom of the plant and will have even less "N". The higher up the plant the leaf it comes from, the higher the "N" content. So it really is subjective as to which blend is high and which is low.