KDE project is working on plasma-login-manager (https://invent.kde.org/plasma/plasma-login-manager) but AFAICT there’s no ETÀ for a stable release.

I use lemurs because as far as I can tell there's no good graphical display managers (lightdm may be the closest as SDDM doesn't show battery level and GDM doesn't allow changing the mouse cursor theme).

It works for me, since about two years. Every single time. Feels really stable.

Intel HD630 graphics in Kaby Lake Core i5 7500T & Core i7 7700T. CachyOS.