More like Second Foundation Trilogy

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The CultureUniverse
universe21 books1987
Science fiction and space opera, about artificial intelligence, set in far future and galactic scale.
“No money, no laws, no hunger, no death you didn't choose; a galaxy-spanning anarchy of humans and drones administered, gently and with enormous irony, by superintelligent Minds who name their warships things like *Frank Exchange Of Views*.”
from the catalogue
Start with Consider Phlebas →
includes Culture
DuneUniverse
universe78 books1963
Set in other star systems.
“The desert planet, where empire runs on a single substance: the spice melange, which folds space, prolongs life, and unlocks prescience, and which exists nowhere else in the known universe.”
from the catalogue
Start with Dune →
includes Dune, Dune Prequels, Dune Sequels, Heroes of Dune, Background of the Dune Universe
CommonwealthUniverse
universe12 books2002
Science fiction and space opera, set in far future.
“Step aboard the train at the Second Chance terminal and ride the wormhole to another star.”
from the catalogue
Start with The Dreaming Void →
includes Void Trilogy, Commonwealth Saga, Chronicle of the Fallers
The Saga of Seven Suns UniverseSeries
series16 books2002
Adventurous in tone, about war.
Start with Hidden Empire →
TeixcalaanSeries
series2 books2019
About identity, set in other star systems.
“A Memory Called Empire and A Desolation Called Peace pair court intrigue with Mahit's conflicted, outsider fascination with an empire she can't help admiring.”
from the catalogue
Start with A Memory Called Empire →
RadchaaiUniverse
universe11 books2012
About identity, set in other star systems and space.
“Civilization is what the Radch calls itself, and civilization is a courtesy extended at gunpoint.”
from the catalogue
Start with Ancillary Justice →
includes Imperial Radch