Microsoft Purview Security Reader role group and also Insider Risk Management Investigators.
Note:
Permissions for Data Security Posture Management for AI
Members of your security and compliance teams who are responsible for managing AI apps in the Microsoft Purview Data Security Posture Management for AI need appropriate permissions when they sign in to the Microsoft Purview portal.
Permissions by activities

Note 2:
Roles and role groups that can view, create, and edit in Data Security Posture Management for AI:
Microsoft Entra Compliance Administrator role
Microsoft Entra Global Administrator role
Microsoft Purview Compliance Administrator role group
Roles and role groups that can view-only in Data Security Posture Management for AI:
*-> Microsoft Purview Security Reader role group
Purview Data Security AI Viewer role
AI Administrator role from Entra
Purview Data Security AI Content Viewer role for AI interactions only
Purview Data Security Content Explorer Content Viewer role for AI interactions and file details for data risk assessments only Reference:
https://learn.microsoft.com/en-us/purview/ai-microsoft-purview-permissions