Today I shot a grey/color chart with the Panasonic G6 and the 12-35mm at different picture settings with manual in-camera white balance.
Here you can download white balance presets for Resolve based on each of the exported settings after I adujsted the grey chart shots for each possible picture setting at 0 0 0 0. Maybe this could be handy when you were able to control the lighting but did not bring a greycard to your set.
Based on the dynamic range that is visible on the grey chart, I’d choose NATURAL or PORTRAIT as a base for my future projects. Comparing the color charts I find the reds in PORTRAIT much more present compared to NATURAL.