I'm thinking that universalism as a whole claims that everyone will be saved in the end.
Can you give me your best point on this? I'm also thinking everything listed will fall in line with this point.
That seems to fall under 5) That no one will enter heaven until they make Jesus Christ Lord by willing confession --- but as you noted, the others will fall in line. It also hinges somewhat on the definition of "in the end." And I think I have already shared this with you, but it bears repeating. You may have to hear/read it three times before it resonates with you. But I think this does that best job of covering all the bases, as it were. I'll make it as easy as A-B-C.
A) Every knee will bow in heaven and on earth and under the earth (the realm of the dead) and every tongue acknowledge that Jesus Christ is Lord. (Philippians 2:10-11) That's everyone - everywhere.
B) No one can say, “Jesus is Lord,” except by the Holy Spirit. (1 Corinthians 12:3) Those acknowledging Jesus Christ is Lord, do so by the Spirit.
C) The very reason that Christ died and returned to life is so that he might be the Lord of BOTH the dead and the living. (Romans 14:9)
D) Anyone who declares (acknowledges) with their mouth, “Jesus is Lord,” will be saved. (Romans 10:9)
E) The NT Greek word used for "acknowledge" in Phil.2:11 is defined as giving full agreement, to whole-heartedly and openly declare without reservation. See note with Strong's definition at the bottom of this post.
Therefore: Everyone everywhere will be saved in the end.
Philippians 2:10-11
that at the name of Jesus every knee should bow,
in heaven and on earth and under the earth,
11 and every tongue acknowledge that Jesus Christ is Lord,
to the glory of God the Father.
1 Corinthians 12:3
Therefore I want you to know that no one who is speaking by the Spirit of God says,
“Jesus be cursed,” and no one can say, “Jesus is Lord,” except by the Holy Spirit.
Romans 14:9
For this very reason, Christ died and returned to life so that he might be the Lord of both the dead and the living.
Romans 10:9
If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved.
Note on "acknowledge" in Philippians 2:11
S1843 eksomologéō (from 1537 /ek, "wholly out from," intensifying 3670 /homologéō, "say the same thing about") – properly, fully agree and to acknowledge that agreement openly (whole-heartedly); hence, to confess ("openly declare"), without reservation (no holding back).