Could one of them possibly be Robyn Ann Pettinato, missing from MT in 1975? Her CP page says her hair was shoulder-length at the time of her disappearance. Height is off but she would have grown in height since 1975. Her height is listed, in 1975, at 60 inches. I can see a facial resemblance , especially with the nose shape and defined cheekbones, between Robyn and "Earring Girl" JD. Robyn's link is here: http://www.charleyproject.org/cases/p/pettinato_robyn.html
I don't know. Robyn has DNA and dental in the system already. I think we should be looking for someone who doesn't have any marker in the system and/or has not been reported missing.