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dnf install @kde
dnf install @cinnamon-desktop
dnf install @lxe-desktop
 
dnf groupinstall mate-desktop
dnf groupinstall mate-applications

list available desktops 

dnf grouplist -v hidden | grep desktop

Install the desired group: 

dnf groupinstall "KDE Plasma Workspaces"

Or, use the short group name to install: 

dnf install @mate-desktop-environment

remote access and ssh tunneling

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-remote-access-for-the-gnome-desktop-on-centos-7

baloo

balooctl disable
killall baloo_file_extractor
killall baloo_file