The top painting have the Grail placed centrally in the picture, so it have of course a strong symbolic meaning, it's a symbol for Sophia, also known as Shekinah, she overshadowed Abraham. Sophia is the feminine Logoi, the Mother. She is the real creator of the physical world and she is hidden, that's why the trinity is male, she is behind the trinity, but we know her under other names that we believe are masculine.
The Grail is where the Son of God is born, where our soul is born.
Who are the Baptist? This is a question most anthros should be able to answer.
But who are Jesus, the Son of Man, and who are the Zarathustra I, the Son of God?
John the Baptist is also the Adam-soul, following Steiner; he is the father.
The Zarathustra I is the first fully developed human I, he is the Son of God.
The Jesus soul is Krishna, the Angelic Logoi that was the instrument of the three deeds of Christ, he represents those angels that didn't get an I, that didn't become luciferan. Jesus is the Son of Man, he couldn't speak as normal people, he had to have the human I of Zarathustra to behave like a man. He stayed back from incarnating, and that was what the Son of Man Abel did.
Lazarus is Cain, the Son of God, Steiner tells in one of his descriptions of CRs initiation that the I of CR is the soul of Jesus, the Zarathustra I.
Jesus says that if he don't die, the comforter will not come, and that's because he is himself the comforter, the Holy Spirit.
The physical father of Jesus is known through the family trees, the Holy Spirit was of course not the physical father, but it fertilized the egg with his own being, he incarnated.
Even in the Gospel of St. Luke it is pointed out that the father of Jesus is the Holy Spirit...
...How can we bring into harmony with all this, the undeniable fact that the Evangelist sees the Father-Principle in the Holy Spirit?
Rudolf Steiner
So we have also here the Father, Son and Holy Spirit and Sophia.
When a new creation is made, an archetype is made, and that being goes in the front of the creation, every step is taken by that being, he is a god, but he is also a personality.
"Let us recall what is described in Occult Science — how from the Lemurian Age onwards souls gradually came down from the other planets (with the exception of one principal human pair who had stayed on earth) and were incarnated in human bodies throughout Atlantean times." Rudolf Steiner
This being have taken every step up through development of life on Earth from one celled organisms up to today.
This being is like all other humans, except (s)he is like the sun compared to the planets.
Michael have the same position in the Hierarchy of the archangels, he is the Logoi of the archangels, the archetypal archangel.
"Nevertheless the Being whom we may call Michael, and who belongs to the Hierarchy of the Archangels — whatever name we may give him — this Being does exist.
There are many Beings of the same hierarchical rank, but this particular Being who is known esoterically by the name of Michael is as superior to his companions as the Sun is to the planets — Venus, Jupiter, Mercury, Saturn, and so on.
He — Michael — is the most eminent, the most significant Being in the Hierarchy of the Archangels. The ancients called him the ‘Countenance of God’. " Rudolf Steiner
The archetype incarnate the same way as all others, but as all others we only see the top of the iceberg, we have no idea about what is below, although old souls, who also have build large spiritual bodies, may have an idea.
That being is both a personality, but is at the same time the whole of humanity, he is the Logoi, the Son in the Trinity.
Steiner have written about the Logoi here: http://wn.rsarchive.org/Lectures/GA093a/English/RSP1982/19051030p01.html
Here Steiner connects Manu to the three deeds of Christ, Jesus or Krishna. It's from his Theosophic period and there he used the vocabulary of the theosophists.
"There was one being who performed special services in that period of human evolution when, through the cosmic-tellurian powers, the combining intellect was being organized in man. At that time the physical brain was prepared in such a way that man was able to develop intelligence later. This capacity was implanted in man and reckoned as one of the deeds of the god Manu." Rudolf Steiner
Here Steiner connects the Manu with the Holy Spirit.
"These highly developed individualities, the Manus, are called in the language of esotericism, “the Holy Spirits.” " Rudolf Steiner
Here we have a description of the Logoi as the sole archetype, with no beings created in his picture yet, the archetype for the next human development on the next incarnation of the Earth, the new Jupiter:
"Now if you think of what may live in a man of our present cycle of humanity as the deepest part of his being, which every man can dimly sense as those secret forces within him which can raise him up to soul-heights; if we think of this, which in most men exists only in rudiment, becoming in a very rare case the essential principle of a human being-a being who only appears from time to time to become a leader of other men, who is higher than all the Manus, who dwells as an essence in every man, but who' as an actual external personality only appears once in a cosmic epoch; if we can form such a conception as this, we are getting nearer to the being of Krishna.
He is man as a whole; he is — one might almost say — humanity as such, thought of as a single being. Yet he is no abstract being. When people today speak of mankind in general, they speak of it in the abstract, because they themselves are abstract thinkers. The abstract being is we ourselves today, ensnared as we are in the sense-world, and this has become our common destiny. When one speaks of mankind in general, one has only an indistinct perception and not a living idea of it.
Those who speak of Krishna as of man in general, do not mean the abstract idea one has in one's mind today. “No,” they say, “true, this Being lives in germ in every man, but he only appears as an individual man, and speaks with the mouth of a man once in every cosmic age. “But with this Being it is not a question of the external fleshly body, or the more refined elemental body, or the forces of the sense-organs, or Ahamkara and Manas, but the chief thing is that which in Budhi and Manas is directly connected with the great universal cosmic substance, with the divine which lives and weaves through the world.
From time to time Beings appear for the guidance of mankind such as we look up to in Krishna, the Great Teacher of Arjuna. Krishna teaches the highest human wisdom, the highest humanity, and he teaches it as being his own nature, and also in such a way that it is related to every human being, for all that is contained in the words of Krishna is to be found in germ in every human soul." Rudolf Steiner
Later in this text we also have Steiner's beautiful description of Arjunas view of Krishna, where Arjuna is the Human Logoi, the only who are capable of working together with Krishna, and who is the Zarathustra I in the Jesus-incarnation.