I see what you mean about Elohim being plural for El. (i think) Yahweh means Lord, if im not mistaken. That's only found in the Hebrew though. John is written in Greek.
Im still not quite understanding what you mean though.
I really hate to confuse you even more but the Godhead personalities are interchangeable and usually where one is mentioned their is another close around. Now the triune God is just impossible for men to comprehend so we just have to take it for what God says he is. So here goes the confusion ;-)
Deuteronomy 4:39
Understand therefore this day, and consider in thine heart, that the Lord he is God in heaven above, and upon the earth beneath: there is none other.
Isaiah 45:5
I am the Lord, and there is none other; there is no God besides me: I girded thee, though thou hast not known me.
Isaiah 45:21
Tell ye and bring them, and let them take counsel together, who hath declared this from the beginning, or hath told it of old? Have not I the Lord? and there is none other God beside me, a just God, and a Savior: there is none beside me.
Isaiah 46:9
Remember the former things of old: for I am God, and there is none other God, and there is nothing like me,
1 Corinthians 8:4
Concerning therefore the eating of things sacrificed unto idols, we know that an idol is nothing in the world, and that there is none other God but one.
1 Timothy 2:5 [Full Chapter]
For there is one God, and one Mediator between God and man, which is the man Christ Jesus,
Mark 12:32
Then that Scribe said unto him, Well, Master, thou hast said the truth, that there is one God, and that there is none but he,
Acts 4:24
And when they heard it, they lifted up their voices to God with one accord, and said, O Lord, thou art the God which had made the heaven, and the earth, the sea, and all things that are in them.
Romans 3:30
For it is one God, who shall justify circumcision of faith, and uncircumcision through faith.
1 Corinthians 8:4
Concerning therefore the eating of things sacrificed unto idols, we know that an idol is nothing in the world, and that there is none other God but one.
James 2:19
Thou believest that there is one God: thou doest well: the devils also believe it, and tremble.
John 20:26
¶ And eight days after, again his disciples were within, and Thomas with them. Then came Jesus, when the doors were shut, and stood in the midst, and said, Peace be unto you.
27 After said he to Thomas, Put thy finger here, and see mine hands, and put forth thine hand, and put it into my side, and be not faithless, but faithful.
28 Then Thomas answered, and said unto him, Thou art my Lord, and my God.
Three personalities in one God .
Gen 1:26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
Gen 3:22 And the LORD God (Elohim) said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live forever:
Gen 11:7 And the LORD God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live forever:
Exodus 3 : 14 And God answered Moses, I AM THAT I AM. Also he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you.
John 8:58 Jesus said unto them, Verily, verily I say unto you, before Abraham was, I am.
Isa 6:8 And the LORD God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live forever:
Deu 4:4 Hear, O Israel, The Lord our God is Lord only
1 John 5:7 For there are three that bear witness in heaven, the Father, the Word, and the Holy Spirit: and these three are one.
John 10:30 I and my Father are one.
John 1:1 In the beginning was that Word, and that Word was with God, and that Word was God.
14 And that Word was made flesh, and dwelt among us, (and we saw the glory thereof, as the glory of the only begotten Son of the Father) full of grace and truth.
Isaiah 9:6
For unto us a child is born, and unto us a Son is given: and the government is upon his shoulder, and he shall call his name, Wonderful, Counselor, The mighty God, The everlasting Father, The prince of peace.
Mark 12:32
Then that Scribe said unto him, Well, Master, thou hast said the truth, that there is one God, and that there is none but he,
Romans 3:30
For it is one God, who shall justify circumcision of faith, and uncircumcision through faith.
1 Corinthians 8:4
Concerning therefore the eating of things sacrificed unto idols, we know that an idol is nothing in the world, and that there is none other God but one.
Ephesians 4:6
One God and Father of all, which is above all, and through all, and in you all.
1 Timothy 2:5
For there is one God, and one Mediator between God and man, which is the man Christ Jesus,
John 14:9
Jesus said unto him, I have been so long time with you, and hast thou not known me, Philip? he that hath seen me, hath seen my Father: how then sayest thou, Show us thy Father?
Philippians 2:5-7
5 Let the same mind be in you that was even in Christ Jesus,
6 Who being in the form of God, thought it no robbery to be equal with God:
7 But he made himself of no reputation, and took on him the form of a servant, and was made like unto men, and was found in shape as a man.
1 Corinthians 8:4
Concerning therefore the eating of things sacrificed unto idols, we know that an idol is nothing in the world, and that there is none other God but one.
Galatians 3:20
Now a Mediator is not a Mediator of one: but God is one.