Flavor profiles are personal preference so it's hard to tell other people what to do. I like my pork rubs sweet but with some heat but not a lot of heat, but you have to do what is right for you. Personally I make my pork rub and take full advantage of the spice rack I have in the pantry. Regular sugar, chili powder, cumin, garlic and onion powders, paprika, maybe cayenne powder. Play with the amounts of each to your likening.
Weber Genesis EP-310, offset BYC, Maverick ET-732, red Thermapen