Adverting once again to the article at the top of the thread, I affirm, as you do:
"Confessing the universal and therefore also exclusive mediation of salvation through Jesus Christ belongs to the core of Christian faith. . . . [T]he Church and Judaism cannot be represented as "two parallel ways to salvation."An entirely different question, is whether the Jewish people as such have an ongoing significant role in Salvation History. This is distinct from the strictly soteriological question. Cyrus of Persia, for instance, had a positive role in Salvation History: nothing definite can be adduced from that as to his eternal destiny.
Another, different, question, is whether we can exhaustively understand HOW a person might affirm Jesus Christr has their savior, even though they do not know the man Jesus even exists, had existed or would exist. We know that Moses and Elijah, Abraham, Isaac, and Jacob (to name just a few) have their place in the Kingdom of Heaven; yet they lived centuries before Jesus.
St. Paul, the great Apostle who rightly insisted on faith in Jesus Christ as the only way to salvation, nevertheless told the pagans at the Areopagus (Acts 17:26-28):
From one ancestor He made all nations ... so that they would search for God and perhaps grope for Him and find Him ---though indeed He is not far from each one of us. For 'In Him we live and move and have our being'; for 'we too are His offspring.'
Here Paul envisions that a pagan --- who, as well, is God's offspring --- might grope for Him and find Him.
Paul of course follows this up with robust preaching about the resurrection of Christ. By some grace, mystery or miracle, "might" encounter Christ in a way unknown --- maybe in a dream, a personal revelation (I've heard of this happening to Muslims who then seek Him)--- maybe a few might just "see the Light," a few who never heard of Christ "Ask" and they receive, "Seek" and they find, "Knock" and the door is opened unto them.
And yet it is not sufficient to say a pagan person "might" encounter Christ and accept His salvation in some hidden manner. It is necessary, like Paul, to preach Christ.
But the only savior of the World is Jesus Christ Our Lord. How He reveals himself to the otherrs, that they may believe in Him-- that is a mysery. But He is perfectly capable of revealing Himself --- as Light --- to "every man that cometh into the world."
If the Bible isn’t true, then God is a liar. You can’t have a bunch of different ways to salvation when God has proclaimed only one way.
That’s a huge problem you’ll have to surmount and I mean you no offense. But if you’re trusting a god who lied about salvation, then you are not trusting the true God.