the problem with that would be the difference between field results and lab results....if you base your soundproofing project soley on material lab results I highly doubt you reach those numbers or even come close!...
There are basic principles that have to be in play in order to achieve high STC numbers...not just one sole material will do the job....
So if your looking for a specific STC rating on a specific product the manufacturer would have that information if they paid to have the "assembly" tested..and there lies the problem..all material is tested in a full assembly not by itself.
I personally would not stand behind the lab test results for plywood,mdf,osb or drywall...
However, drywall has a better mass value than MDF(better blocking sound) and OSB has more glue than plywood which means it would have a better dampening effect.