In Cleveland approximately 1969 the boss or underboss openly cooperated and testified. In New York the only one we know for certain besides Valachi is Scarpa, and others in New York are just speculation. I know a lo ton internet wannabe detectives look at FBI files and try to figure out how many letters are redacted in a document and fit it to a name, or accuse some members of having been informers, but that is silly. Scarpa was fairly high up, he was close to his boss and knew a lot of members in other families. I think he was informing before Valachi.