For example. Right now we got Titan, Ifrit, Garuda, Shiva, Garuda, Leviathan.... but perhaps another continent has other Primals with other names who are elementally aligned?

For Example -

Perhaps the Four Fiends?

Or some of the lesser known ones from previous FF's.

Ixion, Quetzalcoatl, Brothers (Minotaurs), Phoenix, Pandemona, Atomos..

FFXII Espers...