As far as the quantity and severity of the lies... I still think Trump and Clinton have him beat. Johnson doesn't seem like he's on the same level as either of them.
Put another way... I'd have Johnson watch my dogs for a day before I'd trust Trump or Clinton to do the same thing.
Johnson would have eaten all your snacks, both he and your dog would be giggling at the TV, even though it was turned off.
Trump would give you 8% of the amount he sold your dog for.
Clinton would be in a different state giving an expensive speech when your dog was found to have drowned in his own water dish.