Hello @brettbendinelli,
Thanks for writing to us.
In case you want to add the list of categories to filter the posts you can add the element called Terms, which would list all terms, please note it lists all the taxonomy with their archive link, the user can click it and it would list post-related to that taxonomy.

In case you want an AJAX filter, regretfully there is no option at the moment, I would suggest you use the Essential Grid plugin for that.
By default the category archive page would list the post of a specific category, please make sure you have not set Looper Provide since on the archive page there is a default loop going on so you don’t need any extra loop.
Hope it helps
Thanks for understanding