Hi Paulo,
As there is no post tyle category listing widget in Essential Content Types plugin. So for this, I suggest you create a Custom Menu. You can create a custom menu from:
1. Go to “Appearance => Customize => Menus” and Click on “Create New Menu” button.
2. Give the name of the menu, For example “Portfolio”, you don’t need to assign any menu location as we are going to use this in widget. So, just click on “Next” after you give name to menu.
3. After this, click on “Add Items” button, and scroll down and click on “Projet Types”, it will display all your postfolio categories, then click on each Project tpye one by one which you want to display. After adding all, click on “Published” button.
4. After this, go to Widget section from “Appearance => Customize => Widgets”, then in the sidebar, click on “Add a Widget” button. Then add “Navigation Menu” widget. Give the title of the widet and in Select Menu, you need to select that “Portfolio” menu which we created.
Regards,
Sakin