Powershell try to group objects

Dear Experts,

I am working on a script that gets all content of a folder and create a word document with the result as a table format. Everything works except the sorting. I am trying to use group-object in a table without success.

The result I would like is a table with files grouped by their directories.
I tried to modify sorting or add group but I can'tdo it.

The result I have now:
As you can see, the list of files in test\bureau\test is stopped by the folder "Carte" because of sorting.
I would like to have the files grouped by their parent folders with keeping alphabetical sorting. Do you think it is possible?

please see below my script:

# add a background color to directory rows
Function Add-DirBackground
{
   [CmdletBinding()]
   Param (
      [Parameter(Mandatory, ValueFromPipeline)]
      [string]$Line
   )
   Process
   {
      If ($Line.Contains("*dir*"))
      {
         $Line = $Line.Replace("<tr>", "<tr class=""dir"">")
         $Line = $Line.Replace("*dir*", "")
         
         
      }
      Return $Line
   }
}

$head = @"
 <Title>$Foldername - Folder structure</Title>
<style>
body { font-family:Calibri;
       font-size:11pt; }
td, th { border:1px solid #ddd;
         border-collapse:collapse;
  width: 160px;
 }

th { color:white;
     background-color:#344D59;
     padding-top: 12px;
     padding-bottom: 12px;
     font-size:11pt; }

table { width:1050px; margin-bottom:4px;

border-collapse: collapse
}
h2 {
 font-family:Arial;
 color:#212E53;
 font-size:14pt;
}

h4 {
 font-family:Arial;
 color:#212E53;
 font-size:12pt;
}

.dir {
  background-color: #B8CBD0;
  font-weight: bold;
  font-style: italic;
  font-size:11pt;


}

</style>
"@

# Folder select

Add-Type -AssemblyName System.Windows.Forms
$FolderBrowser = New-Object System.Windows.Forms.FolderBrowserDialog
$FolderBrowser.Description = 'Select the folder containing the data'
$result = $FolderBrowser.ShowDialog((New-Object System.Windows.Forms.Form -Property @{ TopMost = $true }))
if ($result -eq [Windows.Forms.DialogResult]::OK)
{
   $FolderBrowser.SelectedPath
}
else
{
   exit
}

# Variables

$path = $FolderBrowser.SelectedPath
$Foldername = Split-Path -Path $FolderBrowser.SelectedPath -Leaf
$outputfile = "$path\$Foldername.html"
$docfile = "$path\$Foldername" + "-Folder index.docx"
$Folders = get-childitem -Path $path -recurse | where-object { $_.PSIsContainer }
$Files = get-childitem -Path $path -recurse | where-object { -not $_.PSIsContainer }

# Request

$Data = Get-ChildItem -Recurse $path | Sort-Object fullname | Foreach {
   $name = $_.fullName
   #$name = $_.fullName.replace($path,$_.parent)
   $parent = Split-Path $name -parent
   $node = Split-Path $name -leaf
   $dir = $_.PSISContainer
   if ($dir) { $node += '*dir*' }
   $level = ($name.ToCharArray() -eq "\").Count
   [PSCustomObject]([ordered]@{
         level  = $level
         dir    = $dir
         parent = $parent
         node   = $node
      })

}

# Output to HTML

$Data |
Select-Object -Property @{ Name = 'Path'; Expression = { $_.Parent } },
           @{ Name = 'File name'; Expression = { $_.Node } },
           @{ Name = 'Comments'; Expression = { $_.Null } },
           @{ Name = 'Doc'; Expression = { $_.Null } } |
ConvertTo-Html -head $head -Body "<h2>Folder name: $($Foldername)</h2> <td><h4>Folders: $($folders.Count) / Files: $($Files.Count)</h4></td>" | Add-DirBackground | out-file $outputfile

# Convert html to docx

[ref]$SaveFormat = "microsoft.office.interop.word.WdSaveFormat" -as [type]
$word = New-Object -ComObject word.application
$word.visible = $false
$Selection = $Word.Selection
$doc = $word.documents.open($outputfile)


# change page orientation to landscape
$doc.PageSetup.Orientation = 1

# Set margins size
$doc.PageSetup.LeftMargin = 25
$doc.PageSetup.RightMargin = 25
$doc.PageSetup.TopMargin = 25
$doc.PageSetup.BottomMargin = 50

# set top row to repeat across pages
$doc.Tables[1].Rows[1].HeadingFormat = -1


$doc.saveas([ref]$docfile, [ref]$SaveFormat::wdFormatDocumentDefault)
$doc.close()
$word.Quit()
$word = $null
[gc]::collect()
[gc]::WaitForPendingFinalizers()

# Remove HTML file

Remove-Item $outputfile -Force

# open Doc file

ii $docfile

Select allOpen in new window

Thank you in advance for your help
Christophe