According to work done by P K Agbedor of CASAS, Mfantse (Fante), Twi (Asante and Akuapem), Abron (Bono), Sefwi (Sehwi), Wassa, Asen, Akwamu, and Kwahu belong to Cluster 1 of the speech forms of Ghana.
Cluster 1 may better be named r-Akan, which do not explicitly have the letter "l" in their original proper use.