i didt read whole post but mention a few things just in case you are unaware: look up the retopo options in marvelous designer. Newer version, 9 I think. also check this out, still a valid workflow I use despite newer tools: https://lesterbanks.com/2016/11/marvelous-designer-uvs-maya/ it's a good workflow becuase the…
The first image is from Marvelous Designer, the others from 3dsmax.I exported the Md one to Zbrush to zremesh to have a better topology but this is destructive of Uvs, so I either simulate cloth in 3dsmax, or I thought about baking out the texture from the exported model of MD to a retopologized version of the same model…