Hello Lyle, and welcome!
I've gone down all the lubing alleys, but somehow mostly end up with a mutton tallow + bee's wax mix for lubricating, and powder + polenta + ball + tallow on top (which might be the original stuff used at the time (minus the polenta?)).
At one point in your BP career you will also reach the paper cartridge stage, and then prolly use over ball tallow.
I have tried Balistol, but found it unfriendly due to it's odour (wife won't let me into the house and neighbors turn their backs at me, works better than garlic for social distancing).
So, my point of view is to keep it all as close to 19th century basics as possible.