Currently we support only Content and HTML widgets for responsive mobile sites. But we provide wide range of adaptable Layouts. And in future more widget types will be added to the list of supported widgets.
When creating new mobile widget you have option to select either Content widget which is suitable for displaying any articles and multimedia. Or HTML widget which can be customized to display other type of content.
Content type widget allows you to specify Layout which is flexible and changes according to device used to preview the content. 1 column will be chosen for mobile devices 2 columns for laptops and 3 columns for desktop.