One Gospel was preached when Jesus was on earth, the other one is preached to Jews first, and gentiles in the second rank, as Paul says in Rom 1:17.
There is no Gospel for J́ews different from a Gospel for Gentiles, it is a matter of time (before/after resurrection) or kairos (Jesus being on earth/in heaven).
I will add to what you posted also showing all nations were in sight when foreseeing the gospel being preached in Abraham (who was a Gentile)
Gal 3:8 And
the scripture, foreseeing that
God would justify the heathen through faith, preached
before the gospel unto Abraham,
saying,
In thee shall
all nations be blessed.
Repentance and remission of sins were to be preached in his name beganing at Jerusalem (then to all nations)
Luke 24:47
And that repentance and remission of sins
should be preached in his name
among all nations, beginning
at Jerusalem.
As the Father sent Jesus he said,
Mat 15:24 ...
I am not sent but
unto the lost sheep of
the house of Israel.
But he also stated he had
other sheep
not this fold
John 10:16
And other sheep I have, which
are not of this fold:
them also I must bring, and
they shall hear my voice; and there shall be one fold,
and one shepherd
Paul clarifies the same for us
Romans 3:29
Is he the God of
the Jews only? is
he not also of
the Gentiles?
Yes, of the Gentiles also
And so although Jesus was sent unto the lost sheep of the house of Isreal, he said something once again to them
John 20:21
Then said Jesus to them again, Peace
be unto you:
as my Father hath sent me,
even so send I you.
Because it was necessary that the word of God
should first have been spoken to them, as is pointed out here
Acts 13:46
Then Paul and Barnabas waxed bold, and said,
It was necessary that the word of God should first have
been spoken to you:
but seeing ye
put it from you,
and judge yourselves unworthy of everlasting life, lo,
we turn to the Gentiles.
And just as Jesus came a light, they are also set as a light to the Gentiles
Acts 13:27 For
so hath the Lord commanded us,
saying,
I have set thee to
be a light of
the Gentiles, that
thou shouldest be for salvation
unto the ends of the earth.
Just as Paul says, Jew first and also to the Greek
Romans 1:6 For
I am not ashamed of
the gospel of Christ: for
it is the power of God
unto salvation to
every one that
believeth;
to the Jew first,
and also to the Greek.
Just as Jesus said,
Mat 24:14 A
nd this gospel of the kingdom shall be preached in all the world for a witness unto all nations;
and then shall the end come.
As it was said of Christ concerning his people, being a minister of the circumcision
Mat 1:21 And
she shall bring forth a son,
and thou shalt call his name JESUS: for
he shall save his people from their sins
And as John says here
1John 2:22
And he is the propitiation for
our sins:
and not for
ours only, but
also for
the sins of the whole world.
Ephes 2:13
But now in Christ Jesus
ye who sometimes were
far off are
made nigh by the blood of Christ.
Preaching peace to those
which were afar off,
and to them that
were nigh.
Ephes 2:18
For through him
we both have
access by one Spirit
unto the Father.
Romans 9:24
Even us, whom
he hath called,
not of the Jews
only,
but also of the Gentiles?
And so although he was sent (as one, by the Father) unto the lost sheep of the house of Israel and come into this world a light. He also says as the Father has sent me even so I send you (which were more then him) and have set the same to be a light of the Gentiles, that they should be for salvation unto the ends of the earth
Romans 15:10 And again he saith,
Rejoice, ye Gentiles,
with his people.
Where now...
Gal 3:28
There is neither Jew
nor Greek
, there is neither bond nor free, there is neither male nor female: for
ye are all
one in Christ Jesus.
Romans 3:30 Seeing
it is one God, which
shall justify the circumcision by faith,
and uncircumcision through faith.
Gal 5:6 For
in Jesus Christ
neither circumcision availeth any thing,
nor uncircumcision; but
faith which worketh by love.
I didn't post this for your benefit you appear to reccognize this unless I misunderstood your position.