I want to get a small camera to carry in trouser or jacket pocket. My first choice was the Fujifilm X100V, but it seems that Fujifilm is not making that camera, or even taking orders for it right now.
After considering other cameras I’ve pretty much narrowed down to the M4/3 Panasonic Lumux G100 with the 12-32mm lens and the APS-C Nikon Z fc with the Z DX 16-50mm lens. With a strong lean toward the Panasonic.
I have used a M4/3 camera and lens a couple of time in the past, but I am not very familiar with that system. I would like some insight, from those who used one or both of those cameras, especially the Panasonic.

When did you win the lottery, or are you just rich?

You know that only about 6 or 7 factories make almost all the battery cores in the world and Canon and Nikon buy their cores from them just like the numerous other battery brands. As a matter of fact, years ago I read an article that named the company(s) that Canon and Nikon contracted with to assemble batteries for them. It was a long time ago, and I don't remember which companies assembled for them. I do remember one of them assembled for both Canon and Nikon at one time or another and about a dozen other brand names, depending on the type of battery.
Some of the Chinese companies will assemble batteries for anyone and put what ever name you want on them.