Go make a poll.
I don't know how to. And I don't see any need.
While I live in a bubble, and have probably been to less shuls than you have been to, I am a real first generation צוגעקומענער, so I have some knowledge of what goes on outside my bubble. I didn't find out in recent years on DDF that in many places (Yeshivish?) they make kiddush before תקיעות.
I am sure
@Something Fishy has been to more shuls than I have, and he says he never heard of singing any part of אבינו מלכנו.