There is no official standalone ISO for Windows 10 IoT Enterprise LTSC 22H2 because version 22H2 is technically part of the General Availability Channel (GAC) Long-Term Servicing Channel (LTSC) Microsoft Activation Scripts
Unlike Windows 10 Home or Pro, LTSC versions do not receive feature updates (like 22H2, 23H2) through Windows Update. You only receive quality updates (security patches) and bug fixes. This ensures that a machine working perfectly today won't suddenly break tomorrow because a new feature update changed a driver or UI element. windows 10 iot enterprise ltsc 22h2 iso