There's a "famous" one I came across in The Pipe Smoker's Ephemeris if you are interested. If memory serves, it's two parts Granger to one of Carter Hall. I don't know what the appeal would be, CH is just fine as it is, but whatever floats yer boat.
I used to mix it with Half & Half tobacco for a fuller taste. Also used to add some Captain Black gold with all 3 tobaccos for an even smoother smoke. Experimentation is a lot of fun and you can come up with some blends that you will really enjoy.
CH & PA in a 1:1, CH & CBW in a 1:1, equal parts CH, PA, H&H and black cavendish is pretty good for mild aro and CH & any good sweet virginia works well. I use CH & PSLNF