Currently there are 100 native Wideangle Prime lenses for Sony A6700 and 81 of these lenses are autofocus (AF) type.
A6700 also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on A6700.
Since Sony A6700 has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 51 Wideangle Prime lenses with Weather Sealings.