Dragons (reptiles): dragonborn, kobold, yuan-ti, tortle, lizardfolk
Giants (diminutive servitors): goliath, orc, goblinoid, firbolg
Fey (enter from Feywild): elf, eladrin, gnome, satyr
Native (hearth and home): dwarf, halflings
Avians (above the world): aarakocra, kenku
Anthropomorphs (animals): tabaxi, leonin, loxodon, shifter, minotaur, gnolls (non-player character race)
Interlopers/Planars (mixed blood, outer planes): human, genasi, aasimar, tiefling
Underground: drow, duergar, svirfneblin
Oceans: triton, locathah, sahuagin (non-player character race), merfolk (non-player character race)What magic or technology do they use? Weaponry or everyday? Science or magic? Beasts of burden or enslavement of others?
System of governance? Democracy, military hierarchy, birthright, etc.
Class or caste system? How are the common folk treated?
Cultural traits and flaws?
How are adventurers (people who skew outside the system) viewed?
What about monster civilizations? Many monsters are smarter than humans, yet do not have their own kingdoms?
Should certain races be removed from "mainstream"? Only isolated pockets or one-off magical creations?