Let's say we need to create lwc with standard Related List instead of creating custom solution. Is it possible?
Yes you can do that.
If you are at the object record detail page ,you can add a related list - single. After adding select Object of which you need to show the data to the related list. The columns needs to be configured under page layout of master object > Page layout> releated LIst and wrench icon.
Object > Record Detail Page - Drag and drop related list Single. In case you need all related list added, you can selected Related Lists it will add all objects related list. Hope this answers.