Exactly those who because of their age or incapacity have no concept of the "law of God/conscience", are truly blind. If you are capable of coming to the conclusion that "I see" then you are not truly blind. Indeed a truly blind man, a man blind from birth, has no idea of what it means to see. If he is then given even a molecule of light, then he can know what it means to see and he can recognize that he is walking in darkness. He can then choose to remain blind and continue to walk in darkness or he can choose to follow the light.
Jesus is the light to the whole world. That means you. That means me.
So if I have this correct, let me take liberty in making a list:
Saved =
Aborted babies and infants.
Mentally incapacitated individuals.
(not sure if this applies if they were once mentally able)
Those who accept Christ as their Savior.
Eternity in Hell -
Those who comprehend the Gospel, hear it, and reject it.
Those of discerning age, who God convicts but do not hear the Gospel.
Have I missed any categories?
What about baptism? Can you be saved without baptism?
What is an age you would say necessary to comprehend the Gospel - 2,3,16?