Here's an example of a typical Clo/MD seller on Artstation : https://www.artstation.com/digitalcombine/store The videos shown by this kind of user usally go all the way to the final garment in MD/Clo, which is suitable for renders but not for game use. A proper game model would involve a retopology step (usually started in…
One of the best places where to find Clo/MD resources is probably the (sigh...) ArtStation marketplace. There are many, many people selling MD garments there as well as paid video tutorials. You probably won't find much of a so-called community around this though : Clo and MD are subscription-based, and their PR/community…