The label YA actually means nothing except that the protagonists, or some of them, are young. Publishers like it because it is a secure marketing niche. But the cost of security is exclusion from literary consideration.
Ursula K. Le GuinJungians such as Joseph Campbell have generalised such journeys into a set of archetypal events and images. Though they can be useful in criticism, I mistrust them as fatally reductive. โAh, the Night Sea Voyage!โ we cry, feeling that we have understood something important โ but weโve merely recognised it. Until we are actually on that voyage, we have understood nothing.
Ursula K. Le Guin