C'mon fellas, I do not use Wayland nor I'll want to, ever!I tried with lightdm. It wasn't wanting to log in at all. I didn't try with .xinitrc script. But none of the Wayland launchers wanted to work with lightdm for some reason.
But, you'll need greeter .desktop file into ../lightdm/greeters with a
X-LightDM-Session-Type=wayland
line. At least, that works for Linux folks.
Try it.