When I lost 55 lbs about 25 years ago, I was, at 6’ 1”, 190 lbs. I looked like a bean stalk. My friends commented on the possibility that I was too skinny. Yet, the official government stats said I should have been at 160. That’s what I weighed in high school.
For example, a trained, non-heavyweight boxer, partially or fully dehydrated, can barely make 160 pounds at 5' 9", let alone make that weight at 6' 1".