I think I'm seeing some lacewood/leopardwood on those top two handles, right? What are the other woods? Did you make these?
I've been looking at handles like these a bit recently, as I'd like to make some of my own and like the two-wood look you have going on. I think the general impression of what I personally find attractive is that the handle should roughly alternate with the knife color. So, for the top knife, I'd tend toward a light wood handle, dark wood ferrule, and then the light blade metal. The bottom two would be the opposite (dark wood handle, light wood ferrule, dark blade metal). So, perhaps switch the top and middle ones? I'd have to see it to know if I preferred it.
Regardless, those all look awesome and you can't go wrong with any combo.
Tyler