There you go... data shared with pretty much who they like (Within the mighty Fb group):
"Our vendors and service providers. We may transfer information we collect to third party service providers that support our business, such as companies that provide technical infrastructure or support (like a content delivery network), provide customer service, or analyze how Messenger Kids is being used to help us improve the service. These partners must adhere to strict data confidentiality and security obligations set out in the agreements we enter with them (such as compliance with data privacy and protection laws and maintenance of administrative, physical and technical safeguards to prevent unauthorized access or disclosure of data) that are consistent with this Privacy Policy, including obligations that they only use the information we provide for performance of the services we specify.
Facebook Family of Companies. Messenger Kids is part of Facebook, and we may share the information we collect in Messenger Kids within the family of companies that are part of Facebook to support the uses described above, and to improve the services provided by the FB family of companies. For example, parents use Facebook Messenger to communicate with their children on Messenger Kids, and Facebook uses information from Messenger Kids to support seamless cross-service communication."
"Our vendors and service providers. We may transfer information we collect to third party service providers that support our business, such as companies that provide technical infrastructure or support (like a content delivery network), provide customer service, or analyze how Messenger Kids is being used to help us improve the service. These partners must adhere to strict data confidentiality and security obligations set out in the agreements we enter with them (such as compliance with data privacy and protection laws and maintenance of administrative, physical and technical safeguards to prevent unauthorized access or disclosure of data) that are consistent with this Privacy Policy, including obligations that they only use the information we provide for performance of the services we specify.
Facebook Family of Companies. Messenger Kids is part of Facebook, and we may share the information we collect in Messenger Kids within the family of companies that are part of Facebook to support the uses described above, and to improve the services provided by the FB family of companies. For example, parents use Facebook Messenger to communicate with their children on Messenger Kids, and Facebook uses information from Messenger Kids to support seamless cross-service communication."
https://www.facebook.com/help/118909212153483
(Edit for typo)