FinalDoomsday
Prince
Note that the 'District' system has been grabbed by the new Humankind game as well, with the addition that by requiring Districts to be for the most part contiguous their resulting cities avoid much of the disjointed appearance of Civ VI.
To be fair to Amplitude they had a district mechanic first in Endless Legend. Now I'm not sure if Firaxis were influenced by that game when making their districts but they do operate very differently.
Humankind's district system seems more like an evolution of the one in Endless Legend.