Strange phantom user accounts after upgrade from Windows 7 to 10

I have a strange problem with a PC that I just upgraded from Windows 7 Home to Windows 10. This is the third PC in my family that I have done the upgrade but the only one to exhibit this problem. The system has 5 registered user accounts, but on the login screen after the system boots, these 5, plus 5 others all called "password" show up. See the picture below. These accounts don't show up in the user account administration settings or using netplwiz. They appear to be sort of like shortcuts to the real accounts because each one when selected, will actually login to one of the real users. I am stumped and don't know how to fix this. Has anyone else seen this? The PC is a Dell Studio XPS 1645 laptop. Could the facial recognition feature (which I am not using) cause this? I also tried doing a clean boot (as suggested from the MS forum), but it made no difference
Thanks!

You could try using the netplwiz command (type into search box) and then toggle the "users must enter a password" off and on. This sometimes sorts it out.

Toggling the "users must enter a password" didn't help, so I uninstalled the FastAccess facial recognition software and that did the trick. Since I don't use it, its no big deal and it was pretty old from 2010. Maybe Dell has a newer version that I could try, but now at least the login screen looks correct. Thanks for the suggestion anyway!