Are Dead Babies Saved, Lost, Or Awaiting The Resurrection?

What happens to babies when they die? Do they go to Limbo like the Church of Rome once taught? Do they go to heaven if they have not reached the 'age of accountability' like many Protestants teach? Do they go to fry in Gehenna fire for eternity for the 'seed of sin' in them as John Calvin asserted? Do all have to accept Jesus as Saviour to be saved per Acts 4:1-12? Will all babies that die be resurrected? Could there be a regeneration that lasts 100 years involving babies and others who were uncalled in this life? …