Does the dng output of fcamera work in Lightroom?
The dng file generated by camera-ui2 is nearly identical to the jpg at default RAW development values, so I think it is heavily processed.
Compare dng output between fcamera and camera-ui2. Fcamera seems to generate a "rawer" RAW, taking the presence of vignetting as evidence as well as how well rawtherapee etc can develop it. No criticism of Nicolai here, as I know he has simply utilised a "built-in".
And what is "NR" written by you above?