You can now display Ninja Forms submissions in DataTable using the DataTable addon for NFViews.
DataTables Addon is available in Developer license of NFViews.
Download & install DataTable addon for NFViews.
STEP 1: Create/Edit a View & Select View Type as DataTable
STEP 2: Add Fields to View
Add fields your view which you want to display in table.
That’s it, save the view & add the view shortcode to the page where you want to display it.
You can check the demo of DataTable view to see how it looks.