Odd features that attract attention:

Aer Lingus stands out as a flag carrier that offers no UM service at all.

Asiana has a Family Service not only for youths, but the same service for elders and adults with children

KLM has the age of escorts depending on where the ticket was bought

United may not be able to offer overnight accommodations for those under 17.

Swiss offers escorting a small child and young teenager together.

Jetstar has the arbitrary definition of independent traveller, with start of secondary school as merely guideline.