The phrase "a sort of young" is correct and usable in written English.
It can be used to describe someone or something that has qualities or characteristics associated with youth, but not necessarily in a literal sense.
Example: "He has a sort of young enthusiasm that inspires everyone around him."
Alternatives: "kind of youthful" or "somewhat juvenile".
"But Justin was identifying with a sort of young, Rat Pack fantasy in some way, and that is a terrific look for him".
Think of a fleet, gentle girl, with flowing blond hair and pale-blue eyes, who is also a trained killer — a sort of young Angelina Jolie without the attitude.
The "&Co" was added to give the name a sort of "young vibe" and has otherwise no meaning.
Harms explains with a sort of young writer's enthusiasm.
Roache said: "I was a sort of young semi-heartthrob in those days and thought getting married was going to finish all that".
A tradition born in 1984, the event marks a sort of young pop culture extravaganza, with performances and sketches from the top names in corporate-approved subversion.
She provides Stu the touch of a sort-of younger woman.
There's a comical cinema-centricity to "Gorgeous Girl," including a subplot involving a fanatical boy movie-maker (a sort of young-Truffaut surrogate in a cosseting household) and a plethora of on-screen movie in-references (including one ironic, bitter, and utterly apt one, in a jail cell, to Robert Bresson's "Pickpocket").
An easygoing Piedmontese red from the under-appreciated Dolcetto grape, a sort of younger cousin of the distinguished grape in this part of Italy, Nebbiolo.
She had the sort of features that looked good from any angle, film star looks - a sort of Loretta Young with a cello between her elegant legs.
Throughout most of human history, a society's population formed a sort of pyramid: young children represented the largest portion — the base — and each successively older cohort represented a smaller and smaller group.
