A cloud-based identity and access management service for securing user authentication and resource access
@IMK Thanks for reaching out. The icon :
shows the normal devices like machines and mobile phones with normal registration or enrollment.
This icon
shows the devices which came to AAD via Autopilot Enrollment. This symbol is used to signify Autopilot devices Enrollment
You can read about Autopilot here : https://learn.microsoft.com/en-us/mem/autopilot/enrollment-autopilot