Uchchaihshravas — the divine white horse that emerged from the churning of the cosmic ocean. Amritodbhavam means born alongside the nectar. That is what sets it apart from all other horses: its origin is divine. Airavata — Indra's white elephant, said to have four tusks and the power to summon clouds.
Among humans, the king. A true king nourishes the people, protects them, upholds justice. The qualities of an ideal ruler mirror the qualities of the divine — fairness, compassion, and strength. That is why among all humans, the ruler is named as the vibhuti.