Same on GNOME Classic on Xorg:
$ export | grep "SESSION\|DESK" declare -x DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus" declare -x DESKTOP_AUTOSTART_ID="10473342199ca4e594150394351057476700000063950008" declare -x DESKTOP_SESSION="gnome-classic" declare -x GDMSESSION="gnome-classic" declare -x GNOME_DESKTOP_SESSION_ID="this-is-deprecated" declare -x GNOME_SHELL_SESSION_MODE="classic" declare -x SESSION_MANAGER="local/artful:@/tmp/.ICE-unix/6395,unix/artful:/tmp/.ICE-unix/6395" declare -x XDG_CURRENT_DESKTOP="GNOME-Classic:GNOME" declare -x XDG_SESSION_DESKTOP="gnome-classic" declare -x XDG_SESSION_ID="8" declare -x XDG_SESSION_TYPE="x11"
Same on GNOME Classic on Xorg:
$ export | grep "SESSION\|DESK" BUS_ADDRESS= "unix:path= /run/user/ 1000/bus" AUTOSTART_ ID="10473342199 ca4e59415039435 105747670000006 3950008" SESSION= "gnome- classic" "gnome- classic" SESSION_ ID="this- is-deprecated" SESSION_ MODE="classic" MANAGER= "local/ artful: @/tmp/. ICE-unix/ 6395,unix/ artful: /tmp/.ICE- unix/6395" DESKTOP= "GNOME- Classic: GNOME" DESKTOP= "gnome- classic" TYPE="x11"
declare -x DBUS_SESSION_
declare -x DESKTOP_
declare -x DESKTOP_
declare -x GDMSESSION=
declare -x GNOME_DESKTOP_
declare -x GNOME_SHELL_
declare -x SESSION_
declare -x XDG_CURRENT_
declare -x XDG_SESSION_
declare -x XDG_SESSION_ID="8"
declare -x XDG_SESSION_