At LAX on NZ they will escort Business pax through the scrum at the gate if there is one, right to the front of the queue. On more than one occasion Y pax have started verbally attacking us for queue barging, even though it's a person in an NZ uniform letting J pax through. I once asked the guy whether it was always like this, and he replied it was usually worse
Whenever I fly Y on an airline where I have no status, I just wait my turn like everyone else. I know my place