Sites like bodybuilding.com, Men's Fitness, Muscle & Strength, etc. still use terms such as "endomorph, "ectomorph" and "mesomorph". These so-called "somatotypes" were invented by the psychologist (and possible eugenicist) William Herbert Sheldon, Jr. Sheldon tied each of the bodytypes to certain personality traits, and his research has been discredited time and again as racist hogwash.
That being said, if so many of these respected fitness websites make reference to the somatotypes, is it because we've since proven there to be some accuracy to the distinct body types without the connection to personality? Or is this just a case of bad science being hard to wash away.