For other elements to have that, other elements would need a non-visual method of seeing the world
Yeah, I remember an idea for an inverted-type AU thing where the roles of the elemental nations were partially flipped, and Toph was the Avatar- Airbending is echolocation, Firebending is thermal imaging, and Waterbending senses water- within the reference of idea, I think that the latter two were only used in relation to humans, but Firebending
could allow for the sensing of other heat sources, as well, and if the fog is thick enough, you could probably get vague shapes?
I don't think that any of those could, on their own, be able to detect truth, but an Avatar, using Waterbending and Firebending to detect sweat and body heat, could detect lies, but they'd
also presumably be able to use the Earthbending technique, so
why would they choose the more complicated path?