According to the description of https://en.numista.com/catalogue/pieces11937.html (10 Francs Djibouti), there are 8 coins in this series.
In the exonumia section, I found also https://en.numista.com/catalogue/pieces23823.html (10 Francs Madagascar) and https://en.numista.com/catalogue/pieces25033.html (5 Chetrums Bhutan).
Then there are https://en.numista.com/catalogue/pieces83919.html (1 Kobo Nigeria), https://en.numista.com/catalogue/pieces23678.html (10 Cedis Ghana) and https://en.numista.com/catalogue/pieces12002.html (20 Leones Sierra Leone). For consistency, they should be moved to the exonumia section. The Nigeria and the Sierra Leone coins are even listed as "common coin"!
This makes six so far. Where are the two others?