I only use initd like god intended /s

I would probably go with Artix because it is arch based and therefore you will get updated packages instead of perpetually outdated Debian packages. Then maybe switch out the kernel for the CachyOS kernel and you should be good.

Devuan can work, I have it on my Dell laptop with dual intel/nvidia gpu. Steam w/proton works.

I would think most distros that use glibc should work, steam and pretty much all games don't care about the init system. I personally use devuan and have had no issues.

Wait what happened with systemd?

E: Thanks both!

Cachy OS uses Limine by default.

Pretty sure Fedora and Nobara both use grubby too.

Edit - Actually just realised the age verification is happening inside systemd itself and not just the systemd bootloader. Ignore me, my answer is pointless