I believe Jesus is the way. But, I think this is not so simple matter as one could first think. Jesus is the way, because Jesus is the one who decides or determines what is required. This doesn’t necessary mean that people who have not heard of him don’t have any chance. Jesus has told the key to eternal life is righteousness.
These will go away into eternal punishment, but the righteous into eternal life.
Mat. 25:46
For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
Romans 6:23
It is possible that person who has not heard of Jesus can be counted righteous by this:
For as many as have sinned without law will also perish without the law. As many as have sinned under the law will be judged by the law. For it isn't the hearers of the law who are righteous before God, but the doers of the law will be justified (for when Gentiles who don't have the law do by nature the things of the law, these, not having the law, are a law to themselves, in that they show the work of the law written in their hearts, their conscience testifying with them, and their thoughts among themselves accusing or else excusing them) in the day when God will judge the secrets of men, according to my gospel, by Jesus Christ.
Romans 2:12-16
So, it may be that person living in a different culture has that right understanding, wisdom of the just, and he ca be counted righteous and have eternal life.
Every single human has to go through one way. That way is ' believing the Gospel.
21For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.
22For the Jews require a sign, and the Greeks seek after wisdom:
23But we preach Christ crucified, unto the Jews a stumblingblock, and unto the Greeks foolishness;
For those who respond to the Holy spirit .
John 7
7Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.
8And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
9Of sin, because they believe not on me;
And or call upon God . Creation all around us screams ' creator ' , our conscience can cause us to seek God . I believe if a person is seeking God / calling out to him ect God will see to it a person is sent to preach the Gospel to him . Even through dreams and vision. This may be the case if someone is in a remote part of the world ect . Whilst all these things may happen its still the responsibility to respond to this and believe the Gospel for salvation .
In the case of God responding to a person seeking God we can read Acts 10 with Cornelius.