Most people think of only Geophagines when thinking about sand sifters, or earth eaters.

But in reality there sand sifting cichlids from all over the world
Africa has a number of earth eaters
The genus Fossorochromis and Taeniolethrinops are just a couple of eartheating genera from the rift lakes.
The genus Stomatepia from Cameroonmight also be considered an earth eater, it jams its face into the substrate in search of prey, it even has cephalic pits that help it find prey. Depending on light used they appear as white or iridescent spots on the face

There are two genera from Central America that would be considered primarily earth eaters, Cribroheros and Thorichthys
Below Cribroheros rostratus sifting sand in a tank I had.

And from Madagascar the genus Ptychochromis has some sand sifter types.
Below Ptychochromis sp Tarantsy

They all look remarkably similar, and many prefer to live socially in loose shoals as opposed to alone, or in pairs, except when spawning.
But when you think about it, most cichlids do plenty of sand sifting..
My Andinoacara coerleopunctatus spend a large portion of the day earth eating, and would not necessarily be thought of as earth eaters.
