The easiest way to get the desired categories is to temporarily add an item gallery to your page. This will help you see the URL for each category you are looking to put on a specific page.

Make sure show-categories is enabled and there are no other modifications, like so:

<gspro-item-gallery show-categories="true"></gspro-item-gallery>.

You can remove this gallery from your page when you are done gathering categories.

Once the item gallery is loaded, click the name of the category you want to add on the left-hand side of the screen.

You will notice that the url of the page has changed based on the category you have selected. This is the value you will include in category tag in your item list.

You can use this method to find the exact string you need for any category on your Wishlist Website!

For a quick video tutorial of how to view the category of an item, click here.