Excellent breakdown! Easy for a non-tech person to understand, and helpful to a semi-tech like me.
I have a G5, and I discovered a downside: the USB-C cable makes contact with the charging port before it is properly aligned. The port is perhaps too close to the opening; I never had the problem with my S4 in the four years I've owned it.
So, in trying to find a replacement (I don't have the right tools to do the port), I can't find any parts that exactly match my markings. So, I guess it's off to iDropped, or ship to LG.