Alex basically succeeded Guzik as the main intermediary between the Outfit and Chicago politics. He would be the last example but, even by the time he died, he was the lone exception to the rule. Even then, and certainly now, you can look at the hierarchy of the Outfit and other LCN families and it's all Italians. There can be non-Italians in important positions overseeing their own crews and certain rackets, and because of those positions they may even hold more influence in practice than some made guys (though I'd venture to guess this is rare in itself), but I can't think of any modern-day examples of associates having official oversight of made guys.