As a publisher, you can set up an Account name.
Here is a simple guide on how to do it:
Go to the Settings. Click Account settings from the left sidebar
Scroll down the Workspace section and find the Account name under the Branding subsection. Fill in the Account name. The name will be used in the branded sign-in page.
Tip: the Company info section will be opened by default.
3. Click the Save changes button when you are done.