Which is least likely to end up in Hell…
The person who was baptized as a Catholic but never practiced any religion,
The person who was never baptized and never practiced any religion.
Both people only have non catholic secular society’s knowledge of Catholicism…in other words either an incorrect understanding, or no understanding.
My thoughts: at least with baptism the soul is open to God and washes away original sin. The opening allows the Holy Spirit to work towards conversion in the soul. If the person is baptized, and leads a good life, there is a chance of Heaven eventually.
Without baptism, there is no washing away of original sin, and the door remains closed to the Holy Spirit. Much less chance of conversion. If a good life is lead, the person is still likely to end up, down under.