@Kingsley Moore Thanks for posting in our Q&A.
For Exchange, Teams and SharePoint Administrator, they are only the admin of these products and they are not have the permission to manage devices in intune portal.
For Helpdesk Administrator, it is a role can change passwords, invalidate refresh tokens, manage service requests, and monitor service health.
For Service Support Administrator, it is a role can open support requests with Microsoft for Azure and Microsoft 365 services, and views the service dashboard and message center.
For User Administrator, it is a role can manage all aspects of users.
For Global Reader, it is a role with only read permission.
We can read the following article to get more information about roles:
https://learn.microsoft.com/en-us/azure/active-directory/roles/permissions-reference#all-roles
So, the above 7 roles, all don't have the permission to change the device ownership. At the same time, I tried assign these 7 roles to my user and it is greyed out in "device ownership".
In our official article, it is needed to use an admin to change the device ownership. Based on my understanding, it means Global Administrator or Intune Administrator.
https://learn.microsoft.com/en-us/mem/intune/enrollment/corporate-identifiers-add#change-device-ownership
Hope it will help you.
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