Ascenders

2 clues
Ones on the way up
More than half of adulthood?
Similar answers:
Adogofflanders
Alandershowitz
Alexanders
Alexandersragtimeband
Anders
Andersdahl
Andersen
Andersens
Anderson
Andersoncooper
Andersonin
Andersons
Andthehendersons
Annflanders
Annlanders
Annoylanders
Anunderstanding
Asce
Ascend
Ascendant