SharePoint Online: Get Site Owner using PowerShell

#Variables for Admin Center & Site Collection URL
$AdminCenterURL = "https://crescenttech-admin.sharepoint.com/"
$SiteURL = "https://crescenttech.sharepoint.com/sites/marketing"

#Connect to SharePoint Online
Connect-SPOService -url $AdminCenterURL -Credential (Get-Credential)

#sharepoint online powershell get site owner
Get-SPOSite $SiteURL | Select Owner

$AdminCenterURL = "https://crescenttech-admin.sharepoint.com/"

#Connect to SharePoint Online
Connect-SPOService -url $AdminCenterURL -Credential (Get-Credential)

#Get Site owners of all site collections
Get-SPOSite -limit ALL | Select URL, Owner

Get-SPOSite | Select URL, Owner | Export-CSV "C:\Temp\SiteOwners.CSV"

Import-Module Microsoft.Online.SharePoint.PowerShell
Import-Module AzureAD

#Variables for Admin Center & Site Collection URL
$AdminCenterURL = "https://crescent-admin.sharepoint.com/"
$SiteURL = "https://crescent.sharepoint.com/sites/purchase"

#Get Credentials to connect
$Cred = Get-Credential

#Connect to SharePoint Online and Azure AD
Connect-SPOService -url $AdminCenterURL -Credential $Cred
Connect-AzureAD -Credential $Cred | Out-Null
 
#Get the Site Collection
$Site = Get-SPOSite $SiteURL

#Get Group Owners
$GroupOwners = (Get-AzureADGroupOwner -ObjectId $Site.GroupID | Select -ExpandProperty UserPrincipalName) -join "; "

Write-host $GroupOwners

#Variables for Admin Center
$AdminCenterURL = "https://crescentintranet-admin.sharepoint.com"
$CSVPath = "C:\Temp\SiteOwners.csv"
 
#Get Credentials to connect
$Cred = Get-Credential

#Connect to SharePoint Online and Azure AD
Connect-SPOService -url $AdminCenterURL -Credential $Cred
Connect-AzureAD -Credential $Cred | Out-Null
  
#Get all Site Collections
$Sites = Get-SPOSite -Limit ALL

$SiteOwners = @()
#Get Site Owners for each site collection
$Sites | ForEach-Object {
    If($_.Template -like 'GROUP*')
    {
        $Site = Get-SPOSite -Identity $_.URL
        #Get Group Owners
        $GroupOwners = (Get-AzureADGroupOwner -ObjectId $Site.GroupID | Select -ExpandProperty UserPrincipalName) -join "; "       
    }
    Else
    {
        $GroupOwners = $_.Owner
    }
    #Collect Data
    $SiteOwners += New-Object PSObject -Property @{
    'Site Title' = $_.Title
    'URL' = $_.Url
    'Owner(s)' = $GroupOwners
    }
}
#Get Site Owners
$SiteOwners

#Export Site Owners report to CSV
$SiteOwners | Export-Csv -path $CSVPath -NoTypeInformation

#Set Variables
$SiteURL = "https://crescentintranet.sharepoint.com/"

#Connect to PnP Online
$Cred = Get-Credential
Connect-PnPOnline -Url $SiteURL -Credentials $Cred
 
#Get All Site collections 
$SitesCollection = Get-PnPTenantSite
 
#Loop through each site collection
ForEach($Site in $SitesCollection) 
{ 
    Write-host -F Green "Site Owner(s) of the site: " $Site.Url 
    Connect-PnPOnline -Url $Site.Url -Credentials $Cred
   
    If($Site.Template -like 'GROUP*')
    {
        #Get Group Owners
        $GroupOwners = (Get-PnPMicrosoft365GroupOwners -Identity ($Site.GroupId)  | Select -ExpandProperty Email) -join "; "
    }
    Else
    {
        #Get Site Owner
        $GroupOwners = $Site.Owner
    }

    #powershell script to get sharepoint online site owners
    Write-host $GroupOwners
}