I have used Zebra , purpleheart,. Fancy maple, Ebony, bloodwood, osage, yew, wenge, tigerwood, myrtlewood , bacote, cocabola,all to good effect. recently I built a fantastic longbow using Oregon Claro burl walnut and myrtle veneer limbs I got from Idaho Curt. The wood was so fantastic that I could not put a stripe in it so I cut a fang and used red and black glass on each side of it to form a self stripe of the walnut. I think it turned out pretty good. The quality of the walnut makes a huge difference in how you treat it though. If it is fairly plain you use it for color and add contrasting woods. If it is top grade like Curt just showed it is hard to use anything else with it IMHO.
God bless you all, Steve