Currently there are 7 native Standard Prime lenses for Canon R5 C and 4 of these lenses are autofocus (AF) type.
Canon R5 C doesn't have a sensor based image stabilization system and none of these lenses have optical Image Stabilization.
Since Canon R5 C has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 4 Standard Prime lenses with Weather Sealings.