UPDATE:
I changed the Highlight Shadow settings (from -3+3) to -2+2 and now it has the same HS settings as the UNFILTERED version. This is interesting as it means that, while the LUT will still need to be different for this version (which is using the Tiffen Black Pro Mist 1/8) because of tonal range, but what's interesting is the SHARPNESS settings are the only difference (2 points less when using this filter). I know, it would be nice if this pattern was the same for ALL lens-sensor combinations (and I could just apply that logic, and not have to TEST each one) but I know better than to do that by now, LOL!

I came back to this test after some time, and I think the old settings looked okay SOOC (Straight Out of Camera) but I think the image would fall apart if any post sharpening was to be added, so I increased the NR (Noise Reduction) to tone down sharpness. This helps to get the image to a better starting point (before adding a bit of sharpening in post). I also increased the COLOR setting by 1 (because adding NR reduced the color saturation too). I need to test the post-production sharpening settings in Davinci Resolve (I will publish them below).