I couldn't find any listings for these victims on any of the sites.
There is a good article about Forensic Anthropology, in the Crime Library that does mention the reconstructions:
Exerpt - talking about the reconstructions in the Gacy Case:
Despite all of this effort, people were reluctant to come forward, so the nine victims remained unidentified.
So I guess its another case of "They are dead, their killer has been convicted, they don't need names".
On page 5 of the above mentioned article they are talking about Karen T. Taylor's work - she's the sculptress who created the reconstructions:
over two hundred cases for law enforcement, including creating sculptures based on the remains of nine of the thirty-three victims of serial killer John Wayne Gacy. From her work, one victim was identified as a young man from Nebraska---he was the first one Gacy killed---and five more were tentatively identified.
This is a brief site which talks about the victims:
Only 25 of Gacys victims were ever identified, the other 8 were buried in a paupers grave with the inscription on the grave stone reading we are remembered.
***They may be remembered, but they are still unidentified
Hope this helps