Get-ADGroupsSortedByName.ps1

$groups = Get-ADGroup -Filter 'Name -like "PATTERNGOESHERE*"' | Select-Object Name, SamAccountName;
"There are "+ $groups.Count +" matching groups.";
$groupDetails = ForEach ($grp in $groups) {
    New-Object PSObject -Property @{'Group Name'=$grp.Name;Count=(Get-ADGroupMember $grp.SamAccountName -Recursive).Count};
}
$groupDetails | Sort-Object -Property Count -Descending | Select-Object 'Group Name', Count;