My go-to rub for "most" things is SPOG. Salt, Pepper, Onion powder, and Garlic powder. I then add a few other things as I feel.
I took one cup of each spice, mixed it up and put it in empty spice bottles. Pulled the label off and grabbed my sharpie and wrote "SPOG" on it. I can add chili powder, paprika, or whatever I want and still have my base rub.