Currently there are 44 native Telephoto Prime lenses for Canon 5D MIV and 33 of these lenses are autofocus (AF) type.
Canon 5D MIV doesn't have a sensor based image stabilization system but 18 of these Telephoto Prime lenses features optical image stabilization.
Since Canon 5D MIV has environmental sealings (Weather Sealing), you may like to couple your camera with one of these 21 Telephoto Prime lenses with Weather Sealings.