When searching for “Windows 10 IoT Enterprise LTSC 22H2 ISO,” you actually want Windows 10 IoT Enterprise LTSC 2021 (Build 19044) .
Boot from the USB. The installer looks identical to Windows 10 Pro but will show “Windows 10 IoT Enterprise LTSC” during setup if you use an IoT-specific key. Otherwise, it shows “Windows 10 Enterprise LTSC.” windows 10 iot enterprise ltsc 22h2 iso