Ivory Coast. We have Kouadio Briscard aka "Vieux" Briscard. He's also known as the guy that played with Meiway until 2002. Also played with Loketo for 2 years.
For more...check out his sebenology
From Nigeria. Oliver de Coque (R.I.P.). Apparently, a Congolese guy named Piccolo taught how to play guitar.(
https://allafrica.com/stories/200807090603.html)
Imitating Luambo Franco
For more...check out his Sebenology. The other Nigerian guitarist that comes close to him Dan Opara and Godwin Kabaka. Check them out.
From Benin. We have Zoundegnon Bernard "Papillon" (RIP). He was guitarist for the colossal band, T.P. Orchestre Poly Rythmo. He also played keyboards and synth. The band plays a vary of Congolese Rumba & Soukous, Afro-Funk, Beninoise Folklore and Afrobeat
You can find more on his sebenology
Pt. 1