I have four providers, that all provide the Instances of Challenge class, to the same Widget. They are different challenges, but I don't know how to differentiate between the providers, so i wondered, if it's possible to give names to the providers.
Actually, you can't, this is the biggest drawback of provider, you can use riverpod instead, it's from the same author, but it has some advantages over a normal provider.
this is what the author of both provider and riverpod sais.
It makes the provider pattern more flexible, which allows supporting commonly requested features like: Being able to have multiple providers of the same type.