Most of your Con+ hits are from the OneVoice system, and are already listed in the database (you have to look at each site's details to see the CC assigned to each repeater).
https://www.radioreference.com/apps/db/?sid=7363
471.4875 - OneVoice System, Site 4, CC 1, Control Channel, Unknown location
472.1375 - OneVoice System, Site 5, CC 1, Control Channel, Unknown location
472.6250 - OneVoice System, Site 37, CC 2, Control Channel, Unknown location
501.9375 - OneVoice System, Site 35, CC 1, Control Channel, Unknown location
502.2625 - OneVoice System, Site 34, CC 1, Control Channel, Unknown location
502.3000 - OneVoice System, Site 32, CC 1, Control Channel, Unknown location
506.3375 - OneVoice System, Site 33, CC 1, Control Channel, Unknown location
Hmmm. Curious why the search functions in the database didn't locate them. That still leaves several blank.
They're all coming back to OneVoice when I search, except for the aforementioned unlisted Site 37.
What method are you using to search? By state or by metro area? Are you leaving the Tone field blank?
Also...
472.0375 - OneVoice System, Site 5, CC 1, Voice Channel
PS - Disregard all of those "Unknown location" in my original post pre-edit, that was only supposed to be for Site 37
What receiver are you using to find these hits, a Uniden scanner? It's possible that a band search would stop on a Con+ voice frequency and identify it as "straight DMR" instead of being part of a trunked system. Keep in mind that all of the other Con+ hits you got were on the control channel, which are announcing that they are Con+.
Frankly, I'm surprised that the scanner isn't showing the Network ID and Site # for those control channel hits; that would've obviously made a huge difference.