Page template
You can organize your URLs by labeling them (using templates). You could have a home template, a category template, a product detail template, and so on. Then you can filter your URLs based on the page template to which they are assigned.
Use-case
Optimizations can often be made to templates. This filter allows you to easily identify which templates may need optimization.
Example
The screenshot displays the performance of each template. You can use this information, along with additional filters, to identify templates that may negatively impact the user experience. Here it would be a good idea to start with the category template, since it falls above the values of the Core Web Vitals.