I routinely check NamUs for new casefiles (i.e., those with a Date Entered that are within the most recent month or two).
But also, I periodically cross-reference the entire NamUs MP database to my current list to pick-up any casefiles that were added months ago, but were kept private until recently.
This guy came up on the list. His casefile indicates he was added to NamUs in October 2011, but he never came up on my screens before.
Craig Allen Conner
https://www.findthemissing.org/en/cases/12787/0
He was missing from Chicago in 1975, and fits the profile for a Gacy victim, so he would seem to be an obvious possible as one of the 7 remaining Gacy UID's.
But his NamUs casefile was created right about the time that Bill Bundy was ID'd, so I would hope that he is on their radar and has been checked out.