For example say what you will about having the most correct doctrine but aside from the fact that most laity probably don't have an competent understanding of it, there's also the historical circumstances into which the churches people are baptized into as infants have spread. It could be said that the spread of such churches has come about in a not so holy manner.
In Guatemala in somewhat recent years there were mass conversions to Syrian Orthodoxy of previously charismatic groups, largely of Mayan communities. Perhaps this has been a more proper induction to the faith than the historical way in which came about at the hands of conquistador forces (see: the parable of the sower).
Eastern Orthodox Churches have also had a presence.