Thanks all!
@7osema Good to know! I’ll upload the RAW file to play with including my attempts for comparison.
https://discuss.pixls.us/t/need-help-with-smooth-sun-color-gradient/31764
@123sg Thanks, luminance Y in filmic_rgb looks better but still not optimal. I could not get even better results with the other options in the filmic_rgb module.
Also, yes I have to read more documentation for the modules 
