SteveB,
Yes - I scoured all the community resources I could before posting but did not seem to find any pertinent content.
It seems that the manufacturer information is gather from the OUI of the MAC address discovered. It appears the MAC address is detected as the Unique ID for these devices immediately but is only populated in the MAC column after a period of time. Once the MAC address is populated, the Manufacturer and Description fields also appear after some time. My guess is that data updates on internal stored procedures.
I did not observe the 'serialnumberscanned' data ever migrate to the 'serialnumber' field on the devices, but a quick UPDATE query in SQL resolved that issue.
I'm continuing to do testing as I can to get as much data as possible. My LS deployment is focused only on network equipment (not PCs) so I recognize there may be slight oddities here and there.
Thanks for your reply! I will go ahead and mark it as the solution as I am sure it would help others with scanning issues as well.