I have a wide selection of solvents, lubes etc.
I use Rem Oil or 3in one Oil, for a quick rag down a barrel and a wipe down before putting my guns away. Kinda de carbon things.
For anything more on a cartridge gun, I get out the assortment of Hopes and the brush kit.
Cva breach plug grease or high temp wheel bearing red grease. For Breach plugs, nipples, and shot gun chokes.
Dawn to clean my muzzle loaders. Then 3 in one oil to coat them for storage.
Red grease for various rub places and threads on an AR. And some of my 22lrs.
PB Blaster, Marvel Mystery oil, and Kroil are generally used for unsticking things or lubing tools, according to application.
Use Marvel Mystery in all my air tools since the 80's. They all still work fine.
Wd 40 I use for its intended propose. Rust preventative on non moving, non interacting, steel parts.
Graphite and lithium for stoping squeaks.
Oh and Renaissance Wax for any wood.