Grace;
Here is a true story for you. I know the man; he is a Deacon, and he was at the Chrism Mass that I attended last night, renewing his vows of obedience to the Catholic Bishop of Calgary.
He probably also tells this story better than I do, but here’s my shot at it:
When he was a little boy, he lived in a primitive little village in Africa that had not yet been encountered by Western civilization (at least, not in many centuries) - he knew nothing about radios, cars, TV sets, or modern medicine, and of course, nobody in his village had yet heard the name “Jesus.”
However, in his village, the elders taught them that there was a Man/God, and that this God had once come down from Heaven to become a human being, and that He had died for sins, and risen again to open up the gates of Heaven and the afterlife to human beings.
Some say that this belief was a variation of the Osiris myth; others say that, at some point in their distant history, they had heard the Gospel, and that, over time, they had forgotten a great many details of the story (and of course, over time, other details got added, although these details were known by the elders to be purely speculative.)
Anyhow, when he was about seven years old, some Catholic missionaries discovered this village, learned their language, and began to teach them the Gospel of Jesus Christ. They gave them four months of what we call in the Catholic Church the “Inquiry” level of teachings - that is, the basics of the Gospel, and the fact that Jesus founded a Church, and wants everyone to be members of this Church.
At the end of the Inquiry period, the elders consulted among themselves (since, as is customary, they had been asked whether they would want to become part of this Church, and enter into a period of intense Catechesis), and when they returned to the missionaries to say what their response to the Gospel would be, they said to the missionaries, “We know this God already. We thank you for telling us His name, and for inviting us to be part of His Church. We accept.”
Of course the missionaries were astonished to hear that they already knew Jesus, but when the elders showed them the various rituals and artifacts with which they worshipped their god, they were soon convinced that these primitive villagers
had, in fact, been worshipping Jesus.
Subsequently, after a period of Catechesis, everyone in the village was gladly baptized at the next Easter Vigil, and those who were of age were Confirmed and received First Holy Communion.
All of the members of the village also joined this particular missionary order, which is how it comes that they are now scattered all over the world, sharing the Gospel, and their story, with whoever will listen.
Now, in answer to your question, I will (like the Jesuit missionaries) pose another question.
Would members of that village who died
before the missionaries came have been considered Catholics by God when they died, or not? Since they believed as much as they understood about Catholic teaching already.