"Other user" appears multiple times on Win10 lock screen

Solution 1:

This process worked for me after I had to re-image my company laptop:

Open Start -> Run -> secpol.msc to open the Local Security Policy control panel.
Navigate to Local Policies -> Security Options.
Set Interactive logon: Don't display last signed-in and Interactive logon: Don't display username at sign-in to Disabled.
Close the control panel.
Open an administrator command window.
Run gpupdate /force (You may need to connect to VPN if this is a company group policy.)
Test by locking/unlocking Windows.