According to Microsoft Entra documentation, the supported resource types for a catalog in entitlement management are:

 According to Microsoft Entra documentation, the supported resource types for a catalog in entitlement management are:

• Applications: Enterprise applications (service principals) registered in Microsoft Entra ID can be added to a catalog for inclusion in access packages.
• Groups and teams: Security groups, Microsoft 365 groups, and Microsoft Teams can be added to a catalog to grant access to group-based resources.