No health professional would categorize you as overweight. Anyone who knows their bodyfat percentage doesn't need to be concerned about BMI. They already have

No health professional would categorize you as overweight. Anyone who knows their bodyfat percentage doesn't need to be concerned about BMI. They already have better information. BMI is just something healthcare providers can do quickly in an office, or people at home, to get a general idea of what is going on. At 12%, you are the exception. For a male 12% is an athletic level of body fat, with ideal being (depending on who you ask) 16-20%. 12% is an extraordinarily low, and rare, for a male in the US in 2022. You are either genetically gifted, have a very, VERY, good diet, or are otherwise athletic. The obesity epidemic is extremely real. The average body fat percentage for American males today is somewhere between 26-30%. Of course, it may also be the case that you are very young. No child should have a bodyfat percentage higher than 16% with an "ideal" bodyfat percentage for an 18 year old being <10%. Even back in the days before obesity engulfed the US, you would have been very rare. During WWII, adult males being underweight was a very serious problem. At 5'8", 165lbs, and 12% body fat with the amount of lean muscle you possess if you had been drafted into service you would have automatically been steered towards commando/airborne forces as an extremely fit person, whereas most other males were scrawny wrecks the army was worried about bulking up to get ready for combat. The average weight for a serviceman in WWII was ~145lbs, so you have 20 lbs more muscle than a typical inductee in 1942.