The Active Directory Access Control List is one of the most confusing security risks I have ever encountered. So, I wrote up a blog to help others understand the AD ACL.
https://cybergladius.com/the-active-directory-access-control-list-explained/
The Active Directory Access Control List Explained - Cyber Gladius
Many Active Directory attacks' root vulnerability is the domain's AD Access Control Lists. This post explains what you need to know about the AD Access Control List to prevent lateral movement and escalation of privileges in the domain.