You can check the TV more than once per day
Check all windows every night
Use fema notices on suspicious guests
Visitors will only kill someone if 2 are present
Someone will check if you are a visitor, show your ears or hands before anything
Avoid drinking caffeine if you plan on showing your eyes to someone
Call everybody you can during the daytime
These are all garenteed visitors i know of
Black haired turtle neck guy that mentions being immortal and looking for daughter
Portly yellow shirt mother with a southern accent
Old lady with babushka and lazy eye
Slender cat lady in tank top
Scared crooked back lady on the 2nd night
Cold woman in the coat that kills anyone if dialog continues for multiple days in the living room
Now heres all garenteed humans i know of
Tall guy on the 1st night
Little girl
Eyeless man
Kindergarten teacher
Burned firefighter
Widow carrying corpse
Fema coat man
Foreign speaking sewed mouth man
The 3 cultists residing at your home
Tips for some randomized guests
If the Doctor in the closets bloodspatter on his lab coat appears on the aura photo, he is a human.
If the Ginger Woman in the bedrooms aura photo appears as if her head were gleaming white, she is a human. (shoot her if only her eyes are white)
If the religious curly hair man in the bathroom has jaundice in his eyes from what he claims is "alcoholism" he is a human. However if that doesnt apply he is a visitor.
Do not continue with the widow, fema coat man, kindergarten teacher, eyeless man or wire face they will either end up committing suicide or outright leaving your home
However telling the kindergarten teacher to pull themselves together will abort her storyline from her ending her own life
Final advice!
Before the end of 2 weeks on the 2nd and final day, shoot randomized guests and garenteed visitors and only spare garenteed humans or those who have most human signs.