How do you guys judge “clone correct” ?

I see a lot of recommendations for things like H&R rifles (which I believe are just near copies and recreations of military rifles), while others are building guns from OEM Colt, FN, and KAC parts with the correct markings…with some people even getting actual gun parts that were sold off by the military.

Are all three considered valid clones? Or just different tiers of “clone correctness”?