[shoubidouwah]

The Sad Tale of the Brothers Grossbart is definitely one, as well as a bunch of the "big epics" like the Malazan empire / The annals of the Black Company?

It may be less common than "high castles", but that is either because of opportunity cost (non-special characters do not survive well this kind of world, so their stories are either short or picaresque) or feature creep if they start from the bottom: if you want an uplifting tale, upwards mobility is needed and at some point only the king is up...