Twi, a popular and the most spoken dialect of the Akan language consists of four languages: Akaupem, Fantse, Asante, and Bono. Twi was developed as literary standards with distinct orthographies (a system of conventional writing for writing a language – norms of spelling, hyphenation, capitalization, word breaks, emphasis, and punctuation.) It was made accessible by the Akan Orthography Committee (AOC).

Akan language (Central Tano) is the principle native language spoken by the Akan ethnic group (Southern Ghana) of Ghana. The Akan ethnic group is the largest of seventeen major Ghanaian ethnic groups. The Akan language consists of more than one dialect and spoken by the Niger-Congo family or the Kwa sub-family. Over 80% of the Ghanaian population can speak Akan language and depending on which literature has this information, about 44% of them are native speakers. Akan language is also spoken in the south-eastern part of Ivory Coast and in central Togo. The name Kwa was introduced by Gottlob Krause in 1985.

A version of the Akan dialect is spoken in parts of the Caribbean and South America. Through slave trades, the Akan language came to the Coromantee of Jamaica and the Nyuka of Suriname.

https://en.wikipedia.org/wiki/Akan_language