The slashers upon finding a baby like an actual infant
Jason: He thinks it's just a really small adult person so he attempts to feed it canned beans. Thankfully his mother intervenes and tells him how to care for it. Eventually he realizes he can't properly care for an infant and leaves it where some counselors can find it.
Freddy: Cannot be trusted with a baby and therefore does not get an entry.
Bubba: His family helps him care for the baby and it soon becomes a member of the family.
Michael: Looks at it and just. Walks away. He has no time for raising babies.
Hannibal: Has no interest in raising a child but isn't a complete dickhead and doesn't leave it there like a certain person who's name rhymes with Shmichael Shmyers so he takes it to the police department.
Norman: His mom demands that he keep the child so he keeps it and she helps raise it.
The Creeper: You don't want to know.
Pinhead: Raises it until it's old enough to become a Cenobite.
John: Gives it to Amanda so she won't be lonely when he dies.
Pennywise: Uses it as bait to lure children in.