I know, but you have just contradicted your own doctrine.
I will close with the remark that all the Messengers were the Embodiment of the Holy Spirit, all were the 'Self of God', they are all One in that Spirit.
Well there's three statements here –
1: "all the Messengers were the Embodiment of the Holy Spirit."
Your claim, and an over-statement. The relevant Scriptures refute it.
2: "all were the 'Self of God',"
Again, your claim, and again the Hebrew and Islamic scriptures refute it. Christianity, of course, is a different case, but even then, Christ allows that Divine status to no human person other than Himself.
3: "they are all One in that Spirit."
Being 'one in that Spirit' does not imply embodiment or selfhood of God.
That is the simplicity of our Oneness as the human race, when we remove the veil of Names and see naught but One God, the God of All Names.
And then go further, and remove the veil that divides us from the One God, and then One God dwells in and with us, then the human race will be one.
This does not necessarily mean that every human will be a prophet, priest or king, these are functions of the Mission.
As the poet said, "They also serve who only stand and wait" and as has also been said, we might well "entertain angels unawares".
The Lord's House has many mansions, but it is the one house, and in those many mansions, and we shall all sing the one song, each in his or her own way.