First: Black, hand-smoothed G-10 (for all purpose), then: Mammoth tooth (for aesthetics)
And
Snakeskin (all types)
Tiger hide
Green linen
Other G-10
Black paper (though with {jungle} green, BP looks so nice)
Gunner grips (Strider)
I am not a fan of Res-C, FRN, zytel, rubber & etc
grips at all. I know they work well, but they are just not for me.