All Custom post types (it could be Portfolio, Services, Treatments, Team, and etc) are controlled by plugin called Pods. Using this plugin you can add any custom post type and even taxonomy. Also, you are able to set number of predefined meta fields which you can display on Post Excerpt or Single Post Theme Template using Pagex Builder.
To check all created post types and taxonomies, from your admin area navigate to Pods Admin > Edit Pods page. Here you can select Pod which you want to change or you can add a new one. For each Pod you can specify additional Fields. It could be image or text input. All these fields you can display on your front end using Pagex Builder elements like Post Data to display text related data, using Image element with dynamic meta key as a source you can display an image field.