User blog comment:Egyptian Hybrid/Can the other three horsemen be considered primordial?/@comment-3423279-20170309054746

Honestly, the only ones who could potentially be Primordial Entities are Famine and War, as they were around when the first case of hunger (potentially the Leviathan) and conflict (potentially God and Archangels VS Amara) happened.

Though this would mean that the Levis are also Primordial entities, as Famine is older than War whose earliest possible moment would've been that time five Lights took out The Darkness.

Pestilence only existed after mortals.

Though, if you wanna get weirdly technical, they could be considered "half" Primordial entities due to their "relation" to Death.