Get-SSISMismatchingPackageNames.ps1

# Point this at your SSIS project directory:
$SearchFolder = 'C:\Users\Joe.Bloggs\source\repos\SSIS_Test1\SSIS_Test1'

$Results = @()

Get-ChildItem $SearchFolder -Filter '*.dtsx' | ForEach-Object {

    $FileContent = Get-Content $_.FullName -raw
    $FileName    = $_.BaseName
    
    $FileContent -match "DTS:ObjectName=`".*`"" | Out-Null    
    $PackageObjectName = ($Matches[0]).Split('=')[1].Replace('"','')
    
    $obj = $obj = New-Object -TypeName psobject
    $obj | Add-Member -MemberType NoteProperty -Name FilePath -Value $_.FullName    
    $obj | Add-Member -MemberType NoteProperty -Name PackageObjectName -Value $PackageObjectName

    if ($PackageObjectName -eq $FileName) {
        Write-Verbose "Found '$FileName' in $($_.FullName)"
        $Issue = $False
    }
    else {
        Write-Verbose "File name is '$FileName' but package object name is $PackageObjectName" 
        $Issue = $True
    }

    $obj | Add-Member -MemberType NoteProperty -Name HasIssue -Value $Issue
    $Results += $obj
}

Write-Output "FILES WHERE PACKAGE OBJECT NAME DIFFERS FROM FILE NAME:"
$Results | Where-Object {$_.HasIssue -eq $true}