When the view type is Vertical, why we can add nothing the view, it works as a Floating Group covering all the page without the possibility to add something. which takes to the main question , what would the equivalent of Repeating Groups in mobile view ?
For now, Horizontal List is what you use when you need it to be horizontal. And using a View Type of Vertical List is when you need it to be vertical. Note that you can have a header and footer on that view type too. There will apparently be a separate Vertical List element coming in the future too.