Such a thing cannot be said to help you to differentiate which YouTube is honest or not, calling the top is something almost impossible to do and the few which do so cannot be said to have a hidden skill that other people do not have, they just got lucky and nothing more, so I will suggest that you reconsider the standard that you want to use otherwise you are going to end up following the advice of someone that does not have what it is necessary to be profitable in the market.