In order of preference highest first
Fish
Chicken
Pork
Lamb
Beef
Beef never high on my list, for some reason I lacked the ability to digest it properly all my life until the last 10 years so it's a habit not to eat much cow, or much of the four-legged variety of animal to be honest, just in case my guts take a dislike. Fish and chicken are much better. Crab is ok too.