Eno sent me these images:
I managed to hack the Panasonic G9 RAW files (Courtesy Imaging Resource) in a HEX editor so that ACR would open them.
Below I made a side by side RAW image comparison (with Imaging resource RAW samples) between the G9 vs GH5 at different ISO values. It can easily be seen the G9 has less noise compared to the GH5.
Click on images to enlarge: