Hi, my two cents worth...
Try downloading Resolve. It´s free, and a truly professional program (as far as I can tell. I´m a professional photographer, but new to video). Resolve, and drone settings in general, have required a lot of effort on my part, but I don´t see a way around it. I´ve been shooting almost everything in D-log/H265 and my finding is that using the DJI LUT-in my case in a node- gets me surprisingly close to what I see as a good STARTING POINT. I´ve done many exposure tests and found that the more accurate the exposure (avoid clipping bright areas, avoid underexposing shadows - as always, set priorities), the better the result with the LUT. The clip will still need added contrast and brightness, depending on how close the initial exposure was to what you want. It is a TECHNICAL LUT, as JavaJack mentioned. BTW, I prefer the "normal" LUT to the Vivid.
Casey Faris` videos on DJI/Resolve colour grading are very good, and his node settings for the CST(Color Space Transformation) give results almost identical to the DJI LUT.
Having said that, I have to admit that getting clips to look as good as those shot in NORMAL mode has been almost impossible. I´m starting to think that maybe they needn´t look the same. Too unnatural?..Thoughts, anybody?
I also still have a number of questions, so far unanswered here, like why do D-log Quickshots result in clips that are not supposed to be possible (no D-log with QS), are clearly LOG as seen using VLC, but not readable by Resolve until converted by Handbrake/VLC?
And - why can´t the DJI TECHNICAL LUT (or any other) get the clip closer to what was seen, and would be produced in NORMAL mode, analogous to a lens profile in Lightroom?