-nvidia-driver-495
The full driver package, kernel driver, 2D/3D xorg driver, cuda driver, utilities
-nvidia-headless-495
only kernel driver, cuda driver, utilities for compute servers without desktop
-nvidia-headless-no-dkms-495
same as -headless but without dkms dependency so the kernel modules won’t be compiled automatically
-xserver-xorg-video-nvidia-495
this is not a driver package on its own but a dependency of the full driver package. Containing only the 2D xorg driver. Don’t install.