List view helps the admins view the Dialog Designer homepage from Classic view to List.
This helps the IT admins to view more dialogs that has been created as Classic Cards would not be able to cover a lot of Dialog cards.
Classic Cards only show the latest dialogs you have created (view up to 10 latest dialogs) whereas the List View gives you the entire list of dialogs created.
To view the Dialog cards in List, Simply click on List View button on top of the homepage to view the created Dialogs in List.
To Toggle back to Card, Simply click on Card view to change the view mode.