GraphQL API - How do I get a list of shopify shipping carriers

[gosixl]

Hello,

When I execute this query, I only get 2 shipping providers returned (DPD & Hermes). However when I click in the Admin area to fulfil an order I get a much more comprehensive list of shipping providers. How can I get the fuller list via graphql query?

My current GQL:

        query {
            availableCarrierServices {
                carrierService {
                    name
                    id
                    formattedName
                }
            }
        }