So far based on sightings
Safe for Leg 2
F/F Pink Shirts, Grey Backpacks
Orange M/F, Orange/Blue Backpacks
Red F/F, Navy Backpacks
The African-Cdn F/F "Twins"
F/F Tatted Blonde and (bright) Redhead
Safe for Leg 1
Jillian McLaughlin & Emmett Blois
M/F Blue Shirts, Black Backpacks
Asian F/F, Red Backpacks
Red M/?, Black Backpacks
Never seen again after leg 1
M/M Green Shirts, Grey Backpacks