I'm a simple guy and like to let the beef do the talking. I get really good fresh chickens too, neon yellow fat, not the white stuff at the store.
Beef and sometimes chicken:
Salt(2ish parts), equal amounts pepper and garlic powder.
Pork and BBQ chicken rub:
Salt, pepper, garlic power, paprika, chili powder, brown sugar, red pepper flake, dry mustard, dash of cayenne powder, and a touch of super secret warmth flavor (ground clove).
Just like list of ingredients greatest amount of least. I would give measurements but I'm not very good at taking my time to measure, I like the eyeball and taste test for everything.