Display Related Lists with More Precision
Add the new Related List - Single component to an object page to specify which related list to display. Rather than use the Related Records List component, which displays all related lists of all kinds, the new components provides a more targeted experience. For instance, you can show just the related open cases for a particular account. In addition, both components have a new layout option for narrower displays, such as sidebars and mobile, for better usability.
Where: This feature is available in Lightning communities accessed through Lightning Experience and Salesforce Classic, and is available in Essentials, Enterprise, Performance, Unlimited, and Developer editions.