The US Navy is an exception, and doesn’t use metric. Even their nuclear stuff uses the English Engineering System (Mostly imperial units.).
This year’s starting strong for me; I baked a box of brownies 2 hours after New Year’s, and ate them all within 48 hours.
In the English Engineering System, the unit of mass is 1 pound mass (lbm), and is equivalent to the amount of matter that weighs 1lb at 1G. I won’t argue that EES is a good system, but it does at least have a kludged unit for mass. It has an equally kludged unit for force, too, called pounds force (lbf).