I see that you are a member of team that was recently migrated to a new Adobe business ID. When you sign into the Adobe Stock site you are presented with two choices, the name of your organization/company and Personal. Depending on which of these you choose will determine what libraries are associated with your choice. If you chose Personal then libraries you create will only appear when Personal is selected at sign in. If you choose your organization the libraries created after that choice will appear with the organization.
We are aware that this is causing confusion for our customers and are working on a solution.