Remove one of the "Other user" login options from login screen

We have Win10 ENT 1809 joined to our domain; laptops with docks.

There are 2 "Other user" login options at the login screen; one requests email address or phone number AND the other joins our domain.

We just want to display one "Other user" which joins our domain.

The "Other user" login option we want removed is NOT associated with any account; we disabled signing in with Microsoft accounts in group policies.

Did not work with either or both...
Still displaying 2 "Other user" login options.

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Also tried the following solutions:

Removed and rejoined domain.

AND
How to remove one of the "Other user" login option from login screen | Windows 10 Forums

Still showing 2 "Other user" login option

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5 net user accounts

5 in Computer Management > Users



2 Built-in accounts (Administrator-guest)

2 user accounts managed by system(DefaultAccount - WDAGUtility)

Our Local Admin account

try looking at disabling fast user switching.

Enable or Disable Fast User Switching in Windows 10

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\ CurrentVersion\Policies\System
Edit the HideFastUserSwitching entry and change the value to 1.