I'm estimating I've had about 70/30 shot in getting new vinyl that is noisy turn quiet after a cleaning (70% in favor of). I am only talking about vinyl that is visually pristine but noisy. Not vinyl with scuffs/scratches; no amount of cleaning can absolve those issues. I know this isn't all in my head, since I've played something, heard the noise on headphones, cleaned the vinyl and then listened again and the vinyl is pretty much dead silent. I screen all my new vinyl on headphones since there are a lot of problems that speakers can't detect (or it's super faint).
My method is DD Miracle (2 parts DD, 1 part deionized water) vacuum, followed 2 deionized water vacuum cycles on my VPI 16.5
I'll only clean new vinyl if it's noisy. Otherwise like JP I don't believe mold release compound has anything to do with noise or sound quality.