I don't like the term "spiritual director." It sounds, well, clinical. More commonly, there are spiritual fathers. But, these are not so many as may be supposed by those with more book than experiential knowledge of Orthodoxy, and the role of a spiritual father in a monastery is far different from (even a monastic spiritual father) out in the world.
I see in your many questions and in your desire for what seems to be to be precise and universal answers something that is very common amongst American (and even Russian) converts. People want to be told what to do. But, the thing is, God has given us spiritual freedom. It's not for anyone to take that from us, and it's not for us to surrender it--that is guruism and is not Orthodox.
We confess our sins to the priest who hears our confession--whether it be the local parish priest or another--it is a priest we know and trust, a priest who prays for us. And we are free to go to another priest for confession if we do not feel comfortable with that one.
A spiritual father--in the fullest sense, that's not something everyone either has or needs. The priest who hears one's confession can help with much of what we need. God will take care of the rest. if there's a need, he will send someone in whatever capacity--a spiritual father, a friend, etc.
Godparents are important--but their primary role is to sponsor candidates for baptism, to encourage as God enlightens them and to pray. They often play a role in raising people in the faith.
Neither a confessor, a spiritual father, or a godparent is some kind of spiritual police--God forbid. Each person has a conscience given by God. Each has a calling to repent and to draw near to God who loves us.
I don't know what you mean by "diagnosis of my soul." Were I you, I would flee this like the plague.
Our holy fathers warn us against unnecessarily divulging all that's inside us. It is not helpful, and can often do us harm. Beyond what we confess, I don't see what more there is to reveal.
In monasticism, there is something called "revelation of thoughts," but this is not for us. And I think it is not a current universal practice in Orthodox monasticism because there are few qualified spiritual fathers.