To answer your question, Those that believe in Jesus that call upon his name shall be saved.
There will be many people that will call upon the name of Christ Jesus ,But look what Jesus tells them in Matthew 7:22-23,
22-- "Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
23-- "And then will I profess unto them, I never knew you: depart from me, ye that work iniquity"
Just because someone calls upon the name of Jesus does not mean that they are saved.
As for the phrases made alive in
1 Corinthians 15:22--"For as in Adam all die, even so in Christ shall all be made
alive"
What this mean is, Upon a person accepting Christ as their Lord and Savior, Then that person comes alive in knowing Christ Jesus as their Lord and Savior.
Where once they did not accept Christ Jesus as their Lord and Savior, they were dead of not accepting Christ Jesus as their Lord and Savior, But now they come to accept Christ Jesus, that now they are made alive unto Christ Jesus.
This mean that they came to the realization of knowing, accepting Christ Jesus, that by accepting Christ Jesus as their Lord and Savior they are made alive unto Christ Jesus and God.