At bare minimum your recipe needs all this

Bare minimum required ingredients to capture bulk of the Kentucky taste.

Black pepper
White pepper

Ginger
Garlic/onion
Cayenne pepper
Celery seed
Mustard powder
Tomato powder
Sage
Thyme
Oregano
Cinnamon
Nutmeg
Coriander seed

Now add some Nigella seed, anise seed, marjoram, basil, chicken bouillon powder, allspice, green cardamom and you got pretty much the whole recipe.