There are various accents in French-speaking Switzerland as well as French-speaking Belgium and I assume local speakers can generally recognise them, but in general French just diverges much less than German (or Dutch to talk about what I know better) and within Europe, French accents are quite light.

It might be due to the strongly centralised languages policies of France and the weight of France relative to the rest of French-speaking countries, I don't know, but basically the only accents that can actually be a bit complicated to understand are those of Québec and Louisiana, which have spent several centuries with basically no communication with France.

There's also Africa but I can't speak about the varieties within Africa though, other than the obvious accent difference between North Africa and Sub-Saharan Africa.