Reorder content types in SharePoint list csom PowerShell

ReOrderContentTypes.ps1

#Load SharePoint client assemblies
#
Try{
    Add-Type -Path 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.dll'
    Add-Type -Path 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Runtime.dll'
    Add-Type -Path 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Publishing.dll'
    Add-Type -Path 'C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.SharePoint.Client.Taxonomy.dll'
}

catch {
	Throw "Unable to load SharePoint Client runtime"
}


function Reorder-ContentTypesInList()
{
    param(
        [Parameter(Mandatory=$true)][string]$url,
        [Parameter(Mandatory=$true)][System.Net.NetworkCredential]$credentials,
        [Parameter(Mandatory=$true)][string]$listName,
        [Parameter(Mandatory=$true)][string[]]$ContentTypeNamesInOrder
    )
    
    begin{
        try
        {
            #get Client Object
			#
            $context = New-Object Microsoft.SharePoint.Client.ClientContext($url)
            $context.Credentials = $credentials

            #Retrieve List
			#
            $list = $context.Web.Lists.GetByTitle($listName)
            $context.Load($list)
            $context.ExecuteQuery()


            #Get Content Types from a list
			#
            $contentTypes = $list.ContentTypes
            $context.Load($contentTypes)
            $context.ExecuteQuery()
        }
        catch{
            Write-Host "Error while getting context. Error -->> "  + $_.Exception.Message -ForegroundColor Red
        }
    }
    process{
        try
        {
            
            #Making generic list of content type ids in passed order
			#
            $ctList = New-Object System.Collections.Generic.List[Microsoft.SharePoint.Client.ContentTypeId]
            Foreach($ct in $ContentTypeNamesInOrder){
                $ctToInclude = $contentTypes | Where {$_.Name -eq $ct}
                $ctList.Add($ctToInclude.Id)
            }


            #Updating content type order
			#
            $list.RootFolder.UniqueContentTypeOrder = $ctList
            $list.Update()
            $context.Load($list)
            $context.ExecuteQuery()
            
            Write-Host "Content Types Reordered successfully" -ForegroundColor Green

        }
        catch
        {
            Write-Host ("Error while reordering content types in a list. Error -->> " + $_.Exception.Message) -ForegroundColor Red
        }
    }
    end{
        $context.Dispose()
    }
}

$credentials = Get-Credential 
$ContentTypesInOrder = "Content Type 1", "Content Type 2", "Content Type 3"
Reorder-ContentTypesInList 'http://YourSite' $credentials 'Your List Name' $ContentTypesInOrder