I live kind of in the metro NY area and I go to the city a lot. I’ve only ever heard “I got on the line” or “Are you on the line?” otherwise it would be “get in line” or “I’m in line for …”

Overall though, that article feels really dated. The famous NYC accent has been fading in recent years. I haven’t heard many of the features listed in that article and more still I’ve only heard from old people.