Das kenne ich und habe dann geschaut ob im Home-Verzeichnis das Verzeichnis Desktop existierte. Ich kann aber einfach mal ein Lite downloaden und das Image mounten um zu sehen was deutliche Unterschiede sind.
Dazu siehe hier: https://www.raspberrypi.org/forums/viewtopic.php?t=146739
Der einzige Unterschied zwischen Lite und Desktop sind wohl die installierten Pakete. uname//etc/os-release verraten nichts über die Art des Images - /boot/issue.txt hingegen schon:
Stage 1 - truly minimal system. This stage makes the system bootable by installing system files like /etc/fstab, configures the bootloader, makes the network operable, and installs packages like raspi-config. At this stage the system should boot to a local console from which you have the means to perform basic tasks needed to configure and install the system. This is as minimal as a system can possibly get, and its arguably not really usable yet in a traditional sense yet. Still, if you want minimal, this is minimal and the rest you could reasonably do yourself as sysadmin.
Stage 2 - lite system. This stage produces the Raspbian-Lite image. It installs some optimized memory functions, sets timezone and charmap defaults, installs fake-hwclock and ntp, wifi and bluetooth support, dphys-swapfile, and other basics for managing the hardware. It also creates necessary groups and gives the pi user access to sudo and the standard console hardware permission groups.
There are a few tools that may not make a whole lot of sense here for development purposes on a minimal system such as basic Python and Lua packages as well as the build-essential package. They are lumped right in with more essential packages presently, though they need not be with pi-gen. These are understandable for Raspbian's target audience, but if you were looking for something between truly minimal and Raspbian-Lite, here's where you start trimming.
Stage 3 - desktop system. Here's where you get the full desktop system with X11 and LXDE, web browsers, git for development, Raspbian custom UI enhancements, etc. This is a base desktop system, with some development tools installed.
Stage 4 - Normal Raspbian image. System meant to fit on a 4GB card. This is the stage that installs most things that make Raspbian friendly to new users like system documentation.
Stage 5 - The Raspbian Full image. More development tools, an email client, learning tools like Scratch, specialized packages like sonic-pi, office productivity, etc.