There isn't any racials persay...racial armour which you can obtain all other races via trading..
right?
If so..prob Floran.
Yep, but whether or not it's just a matter of some other player handing you the armor for the materials hasn't been clarified yet (afaik). I think the race aesthetics are vastly more important when it comes to choosing the right race for you, but if I had to guess, the interracial armor acquiring is more of a mid-game thing than something you can do within the first hour. At least, I certainly hope so - it'd make the race choice feel more meaningful since they have no inherent abilities.
SJRB:
Armor will have different benefits depending on the race it belongs to:
Avian: Allows you to glide.
Apex: Allows faster running capabilities and higher leaps, greatly increasing mobility.
Floran: Allows absorption of sunlight.
(At the moment, it is unsure whether this means health, food, or energy.)
Human: Allows you to carry more items.
Hylotl: Allows you to breathe underwater and swim faster.
Glitch: Allows you to mine faster.
The armor gives these abilities, not the race itself. It is likely that players will have to be wearing a complete set to gain these abilities. As the player progresses through the game, they will be able to craft other race's armors and gain their abilities, but at the start players may only craft their own race's armor.