Nano11 Builder is a free PowerShell script made by NTDEV. It helps you create a simple Windows 11 image using only official Microsoft tools like DISM (Deployment Image Servicing and Management) and ...
Personally, I use Winhance to create a custom Windows 11 ISO free of Windows bloatware, so I don't have to spend hours disabling and deleting superfluous apps and features after installing Windows.