JFK - however, they lost the privilege to bypass immigration. Still they try from time to time

DXB - fairly efficient, buggy ride through the tunnel, somewhat faster immigration and security (long time I haven't used it, was going on EK lately)

YUL - excellent service (the station manager there is fantastic). However, they cannot bypass the security lines IIRC

MIA - never arrived there but only departed, but I think they escort pax to the lounge departure (I declined it so I don't know exactly)

JNB - arriving pax get picked up from the gate and where relevant get accompanied to the check-in counter for domestic onward connections