There is no need to insert a dummy record, just order descending on the number of properties of each object.
Something like this
$VMatSite|Get-VMInfo|
Sort-Object-Descending-Property {$_|Get-Member|Measure-Object|Select-ExpandPropertyCount} |
Export-Csvd:\scripts\server-report\$Location-VMReport.csv-NoTypeInformation
The disadvantage is that your CSV file will not be ordered in a nice way