Originally Posted by: MaryMM 
I arrange mine by color of bindings in a rainbow order with white, beige, grey and black at the end.
I came here to say this! Here's how mine's arranged:
Shelf 1: Pink, red, orange
Shelf 2: Yellow, green
Shelf 3: Blue, purple
Shelf 4: Black/dark neutrals
Shelf 5: White/light neutrals
I use my cookbooks so much that I pretty much remember the spine color of every book, so I don't find the need to alphabetize them.
My cookbook shelf is displayed right in the middle of the kitchen/dining area, so it's a focal point. I wanted to prioritize aesthetics, I love the way it looks!