You said "requires" hashing. Sets and Maps do not require hashing. Through it is correct to observe the unfortunate naming convention in the c++ std lib.

std::set and std::map should be std::ordered_set and std::ordered_map sts::unordered_set and std::unordered_map should be std::hash_set and std::hash_map

If this were so then it might make the incorrect usage of these two options less prevalent. But they are both map and set structures just each version has other guarantees that in some scenarios may be more or less useful.