The list of 27 on Nile testnet so far (only the first 4 are live on Mainnet for now):
Trinidad & Tobago Dollar,
Eastern Caribbean Dollar,
Barbados Dollar,
Jamaican Dollar,
Aruban Florin,
Dominican Peso,
Bahamian Dollar,
Cayman Islands Dollar,
Cuban Peso,
Haitian Gourde,
Euro,
British Pound,
Chinese Yuan (Offshore),
Hong Kong Dollar,
Singapore Dollar,
Canadian Dollar,
Australian Dollar,
UAE Dirham,
Ghanaian Cedi,
Colombian Peso,
South African Rand,
Nigerian Naira,
Kenyan Shilling,
Indian Rupee,
Russian Ruble,
Ukrainian Hryvnia,
Georgian Lari,