This is gallery post. Your theme comes with built-in slider / gallery plugin and allows to create unlimited sliders. Gallery post provides a selectbox that you can assign a slider / gallery to the post. That being said, same slider can be used on different pages.
Following is generated through built-in WP Gallery (Medium size cropped thumbnails) :
Photos by Owen Perry
Gallery Post with variable image sizes.
This is quote post. All post fields stay hidden except Quote and Author in this format— This is author (optional)