Office 365 Groups report does not bring all sites with template Group#0

Hi,

I am trying to pull Office 365 Groups and all site collections report via PowerShell. This is how I did it:

• To get details about all O365 groups (please note that I cannot use EXO cmdlets due to some reasons) I am using this query "Get-AzureADMSGroup -All:$True | Where {($_.GroupTypes -eq 'Unified')}" and getting all required details of groups but this does not give associated site urls so I used graph query to get associated site urls of each Office 365 group. So I got the full list of Office 365 groups
• Then to get all sites information from Tenant I used PnP PS module and I got all required information along with site template name. 

Here is the issue: When I count the no. of sites with template = GROUP#0 returned in second report (via PnP), the count is not the same as no. of groups found in first report. There is a difference around 200. Is there any possibility that Group connected site can be created even without having group type = UnifiedGroup? What am I missing here?

-Prashant.