Hide a Form Template from a Report by Default
To hide a form template from a report as the default, go to Form Builder on the website as an Admin user.
Click on the Edit button beside the form template you want hidden in Folder Reports by default.
Under the "Default Visibility" option, click on the "Hidden" button then save the template.
Clicking this option on the form template will hide it by default from any folder report download.
If a form template has the default "Hidden" setting applied, then the eye icon will show up as grayed out when the form is added to the folder. To override the setting, go back to Form Builder to make the form visible again.
More details on other options to hide a form from a report can be found HERE.