Ethnical Colony Worlds
The colonies we usually see on TV are usually draws settlers from a mixture of ethnical backgrounds making them "Federation" in origin.The exception was Dorvan V, the colony settled by Native Americans in the DMZ.
I would imagine that Dorvan V is not the only planet settled along ethnical lines in an attempt to go back to their roots.
The CO in my current campagin comes from New Kyoto a world settled by colonists of Japanese origin who keep to many Japanese traditions. Another officer, the security chief is from Potsdam where traditional Prussian values including duelling in schools are kept.
The PCs have also encountered several colonies of similar types over the years. They've visited Dorvan V to bring relief supplies after the Dominion War and they've visited planets settled by ethnic Russians who live idyllic lives on dachas.
Of course these colonists have weeded out the dark side of their culutre so there are no slaves or serfs (robots and automatons take up most of the slack).
Arise, arise, Riders of Theoden!
Fell deed awake: fire and slaughter!
Spear shall be shaken, shields be splintered,
a sword-day, a red-day, ere the sun rises!
Ride now, ride now! Ride to Gondor!
Theoden King: The Return of the King