Since I had a few extra minutes I also found the MY2017 Order Guide on the forum. They are the definitive breakdown of the options and package sets on the car in any given MY. You are correct the car may lack ACC as it would only included in Driver Assistance Plus II that was eliminated by time MY2020 rolled around. That's why I wasn't aware of the option as clearly.
https://g30.bimmerpost.com/forums/sh...17+order+guide
What I also find very interesting is the ACC package in MY2017 included lane change support, but that was eliminated in later MY cars and added back in the LCI. I guess they took features away from us...