In order to achieve the old winlogon we could use ConsoleLogonHook.
Reason to add
Old Windows Login Screen makes the overall recreation more accurate.
Describe alternatives you've considered
There is also this ClassicLoginShell fork that can be found here (on the last page). Sadly, I couldn't find more information about ClassicLoginShell and the Windows versions it supports.
Additional context
ConsoleLogonHook works only for Windows 10 version 20H1-22H2 (and its Windows 10 LTSC 2021 counterpart) it shouldn't be much of an issue, considering that the transformation pack is already limited to those versions. Furthermore, we could just grey out this version in the installer if a never version of Windows is detected. Another important thing is that Microsoft accounts might be buggy and the CTRL+ALT+DEL requirement is not fully implemented.
Solution
Reason to add
Describe alternatives you've considered
Additional context ConsoleLogonHook works only for Windows 10 version 20H1-22H2 (and its Windows 10 LTSC 2021 counterpart) it shouldn't be much of an issue, considering that the transformation pack is already limited to those versions. Furthermore, we could just grey out this version in the installer if a never version of Windows is detected. Another important thing is that Microsoft accounts might be buggy and the CTRL+ALT+DEL requirement is not fully implemented.