Using this portrait for reference. I had planned to make my own imaginary shogun from all those, but it didn't happen that way. In fact Tokugawa Ieyoshi has the portrait with the most obvious shading, which considering my poor human-drawing skillz, was very helpful.
Second choice would have been Minamoto no Yoritomo, whose portrait is just amazing. But really flat as shading goes.
Too bad I don't have time to try the other palettes.
Edit: I should have added a border, it doesn't work well with the page theme. That PJ default theme is terrible, ya know...
Indepth portraiture C'n'C more than welcome!