Upper

Uppers are humans with one or two superhuman abilities, but usually are otherwise indistinguishable from normal humans. These abilities are genetic, but usually randomly determined. The powers are often unique to the individual, but many uppers have similar powers. Immediate family members of uppers are resistant to the uppers power, whether they are uppers or not.

Origin of name
When sports leagues were invented, there was the question of what to do with the superpowered people who would surely wish to join in the fun. Rather than bar them outright, they were allowed to form their own leagues, designated the Upper Leagues.