From the past:
Rufins, 'red men'. So named for their distinctive skin pigmentation - it's not like they're painted scarlet, but you wouldn't call them anything but red. Tend to low body fat and well-defined physiques, capable of making some truly hideous grimaces. Dwellers on the plains - hunter/gatherers whose relatively high population and organisation enables them to stand on an even footing with the more advanced, iron-using civilisations with whom they trade for weapons they cannot make themselves.
From my current Twilight project:
Bownar (singular Bown). 'Dwellers in Wilderness'. In the height of past civilisations, some people decided to go live in the wilderness, where the day/night cycle was irregular or absent and life was harsh. Tall, sleek, and very dark. Traditional bownar culture is neolithic and animistic, believing in spirits that live in all things; West Bown embrace all spirits and will tattoo themselves with animal features to gain their strength, while East Bown believe that animals should deal with animal spirits, and forbid depictions of any image but that of Man. Today, the West Bown have been adopted into more advanced cultures, with especial dominance in Aerie Cathedra's upper classes (warriors and dragon-riders), and the deserts of Desolate Noon, while East Bown remain in the deep wilds.
Tallaern. Shorter and paler than bown, of a technological background, with red, blue, green, or gold hair. Ears come to a small point midway between top and bottom of the helix, featuring a spur emerging from the antihelix (the 'transhelic spur', not found in other human anatomy). Tallaern are most common in advanced areas, and form the primary technological backbone of Riftsea. They are practicers of various forms of technomancy. One of the four post-Draconis races.
Androgyne. Besides all looking the same, many of this beautiful race are naturally hairless. They are expert swimmers and all possess some level of telepathy or empathy. Androgynes are a small section of the population, but maintain a distinct and internally-open culture (they can't help but be friendly). One of the post-Draconis.
Derica (singular Deric). One of the post-Draconis races, the derica are the only ones who stayed in their home when the Draconis fell and the land started dying in an eternal day. Today, their population has homogenised many of the gene-traits the Draconis gave to their subordinates. The modern deric has red, blond, or brown hair, is pale-skinned and takes literal decades to tan, and is inordinately tough - will not sunburn until nearly halfway to the sun. They're stubborn, mostly rural lizard farmers who do things The Way They've Always Been Done. Herders, water prospectors, and so forth.
Cathedral. The latest post-Draconis race, created by a disparate population of bownar, tallaern, and other races (including many gene-altered families) who had a falling-out over the role of dragons in society. The Aerie (a faction dominated by bownar warlords) held that dragons were excellent servants once you lobotomised them. The Cathedrals held that dragons were gods. You can probably see why they left for a new land, with as many gods in tow as they could manage. Once the population restabilised (with a little help from some draconic sorcery), the cathedrals were the shortest of the human races, prone to putting on fat against harsh months, and quite stratified in society, with dragon priests at the top and peasants at the bottom. They have black or brown hair, and fingernail-like scales on elbows, clavicles, and spine.
Blessed, Ascendant. Two post-human races created by the Angel Queens in the far East, the Blessed have insect features to make them more efficient (because of the availability of life magic, they only rarely use tools, although in recent years the coastal Blessed cities have acquired some DC power networks from tallaern traders), while the Ascendant have been grouped into hiveminds of a dozen or more members with strange intelligences. Blessed Ascendant are not unknown.
Sundered. In the First Shadow War, the demonic Shadow Brethren recruited from their enemies, breeding them with shadows and forever tainting their blood. Members of any race became Sundered, but as the Cathedral Exodus happened in the middle of the War and ended up right on the edge of the Shadow Brethren's invasion site, cathedrals were most afflicted, and even today are expected to stone, skewer, or burn Sundered whenever they are discovered. Of course, the Shadow Brethren are long gone from this plane, so Sundered born in the past three centuries are unlikely to be evil. Those who possess extreme physical changes such as wings or horns are easily detected and driven out; they tend to grow twisted and become the very thing their detractors wanted to stop... if they survive.
OK, that's what I've got in human races. They tend to get blurry due to migration, and culture and race are distinct concepts. Hopefully that's whetted someone's appetite...
