The correct GraphQL mutation to create a new item in Sitecore XM Cloud iscreateItem. This mutation allows developers to specify the necessary details such as the item's name, template ID, parent ID, language, and fields to create a new content item within the Sitecore content tree.
References:The usage of thecreateItemmutation is documented in the Sitecore XM Cloud Developer's Guide, which provides examples and explanations for authoring operations, includingitem creation1.Additionally, the Sitecore Stack Exchange provides insights into the available mutations for item management, confirming the use ofcreateItemfor creating new items2.