I have no reason to believe that you don't have Jesus, and I firmly believe Jesus is the Truth.
Great.
I don't believe there is more needed for salvation, but the Church is the Body of Christ, so you do need the whole Person.
THE church is all believers, and we certainly need one another for fellowship, prayer support etc.
But anyone who was on a desert island/a country with very few Christians/on their death bed etc could still be saved through Jesus, without any of these other things.
All I can tell you is that we believe we are the Church Jesus instituted (do you think Jesus didn't do what he said he would do??? I doubt that that's what you think.), that we have been given the fullness of truth, and all others have a subset of the truth.
So others have "a subset" of Jesus - since Jesus is the truth? Or maybe only "a subset" of the Gospel?
I've asked several times how the Gospel that Catholics believe is different from the Gospel that Protestants believe, and had no satisfactory answer. All I was told - eventually - was that Catholics believe the Gospel that is taught by the Magisterium, who teach Scripture.
That doesn't tell me if you believe that Jesus, the eternal Word, was born of Mary, lived, died for us, was raised again, ascended, sent his Holy Spirit to believers to help us how live our faith, and will return one day as King. If you do believe that, which is set out in the Nicene Creed; so do I and we are therefore both children of God - equal in God's sight.
That is a fact. There is no "subset of the truth" in the NT; people believed this Gospel, that Peter and others preached, and were added to the number of believers. Gentiles believed this, were saved and received the Holy Spirit, just as the apostles had done. Which led Peter to say, "if God gave them the same gift that he gave us, who was I to think that I could oppose God?" Acts of the Apostles 11:17. Previously he had said "I now realise that God does not show favouritism", Acts of the Apostles 10:34.
I can't help feeling that, deep down, Catholics believe, "you need to have the same view of the sacraments as us and believe what we believe about Mary/Peter in order to have the full Gospel, and THEN you will be saved" - in fact, this comes across in many of the responses I have had.
If that is true, then you ARE saying that there is more to the Gospel; that Jesus saves - yes, but you need this as well.
If that is the case, then I believe it is wrong, and Scripture affirms that.
If it is not the case that Catholics think that - great! But then that means we have the same God, same Saviour, same Spirit, same Gospel - and there are no grounds for saying that we (non Catholics) do not have the full truth, are not the true church or are not true Christians (as was said to me.)
I don't see that any Catholic is going to admit that a non Catholic is also part of the ONE church, a child of God and equally as saved and important to God as Catholics are.
Thankfully though, it's God's opinion that matters.