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GNOME is good, actually [GNOME customization guide]
(www.osnews.com)
A community for everything relating to the GNU/Linux operating system (except the memes!)
Also, check out:
Original icon base courtesy of lewing@isc.tamu.edu and The GIMP
But KDE is highly customizable ... every single bit of that 'clutter' could easily be turned off and removed if you tried. If you want to, you can make KDE show you an absolutely blank screen with nothing on it at all.