Playable Species

Ophidians has a 1-2 sentence description. Isn't that neat?

Values: Wisdom, Balance/Fairness, Socialism

Disapproves Of: Selfishness, Short-Sightedness, Wanton Destruction

Most Often: Merchants, Druids, Rangers

Native To: Mashka Sipal (Feraweth), central and eastern Elomawan

Options:

Rattler (venomous)

Constrictor (strong)

Racer (fast)

Plane-Touched Tieflings has a 1-2 sentence description. Isn't that neat?

Values:

Disapproves Of:

Most Often: Sorcerers

Native To: Molthuth

Options:

Earth

Fire

Wind

Water

Threshers has a 1-2 sentence description. Isn't that neat?

Values: Order, Conformity, Productivity

Disapproves Of:

Most Often: Farmers, Crafters, Traders

Native To: The Whitemark Islands, The Godhurst Colonies

Options:

none

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Aerune-specific:

Ophidian

Rattler

Constrictor

Racer

Satyr

Kobold

Goblin

Grey Goblin

Green Goblin

Centaur

Drakonka

Half-Giant

Stone Giant (Goliath)

Storm Giant

Fire Giant

Ice Giant

Merfolk

Freshwater

Saltwater

Thresher

Standard 5e races common in Aerune:

Dragonborn

(elemental variance)

Dwarf

Hill Dwarf

Mountain Dwarf

Deep Dwarf (Duergar)

Elf

High Elf

Wood Elf

Dark Elf

Fey Elf (Eladrin)

Star Elf (homebrew)

Gnome

Forest Gnome

Rock Gnome

Deep Gnome

(Half-Elf)

(non-elf-parent variance)

Halfling

Lightfoot Halfling

Stout Halfling

Half-Orc

Human

Tiefling

(bloodline variances)

Shifter

Beasthide

Longtooth

Swiftstride

Wildhunt

Lizardfolk

Aarakocra

(Most any official 5e player race can appear in Aerune. Talk to your DM about it!)

A Note On "Humanoid"

Most "humanoid" races are a combination of build (waifish, human-average, broad) and height (short (3-5'), human-average (5-6.5'), tall (6.5-8')). For example, dwarves are broad and short, while half-giants are broad and tall. Elves are waifish and average height, and halflings are short and average build.
For many half-breeds, they have a greater range of size+build than one might assume. A half-orc is likely to be taller and broader than a human in general, thanks to their orcish heritage, but if their other parent is a dwarf, they may wind up 5' tall and built like a brick wall. If a half-orc's other parent is an elf, however, they may wind up with an almost human-like build but nearly 7' tall.
For uncertain-origin races like shifters and tieflings, they can have any build+size that would make sense for their heritage. Gnome-sized tiefling? Absolutely. A shifter the size of a half-giant? Dwarf-shaped aasimar? Uncomfortably tall and slender water genasi? Hell yes. Any "race" that can be born to seemingly-unrelated parents can have a similar bodytype as their parents (but can also be completely different, if you choose)!
Tl;dr: Don't be afraid to explore the full range of options for your chosen race.