I use Windows 11 IoT Enterprise LTSC, which as far as I'm aware has all the features that Pro has (plus the IoT Enterprise stuff) and zero bloat. I switched to it from my already de-bloated 11 Pro installation (because it removes some telemetry you're normally unable to disable) and have had 0 issues with it. I can't say I activated it using a normal retail product key, however, there are easy solutions to that.