You can get a list of schemas with:
gsettings list-schemas
org.gnome.rhythmbox.library org.gnome.shell.overrides org.gnome.system.proxy.https org.nemo.preferences org.gnome.settings-daemon.plugins.cursor org.gnome.evolution.shell org.gnome.evolution.plugin.face-picture com.ubuntu.update-manager org.gnome.shell.extensions.auto-move-windows org.gnome.eog.fullscreen org.gnome.login-screen org.gnome.eog.view org.gnome.evolution-data-server.calendar org.gnome.evolution.plugin.itip org.gnome.evolution.plugin.autocontacts org.gnome.evolution.plugin.attachment-reminder com.canonical.a11y-profile-manager org.gnome.libgnomekbd org.gnome.rhythmbox.plugins.mtpdevice org.gnome.desktop.search-providers org.gnome.evolution.shell.network-config org.gnome.Logs org.gnome.rhythmbox.player org.gnome.calculator org.gnome.settings-daemon.plugins.a11y-settings org.gnome.DejaDup.Rackspace org.gnome.system.smb org.gnome.desktop.media-handling org.gnome.software org.gnome.settings-daemon.plugins.smartcard org.freedesktop.Telepathy.Logger org.gnome.desktop.default-applications org.gnome.nm-applet org.gnome.settings-daemon.peripherals.keyboard org.gnome.gnome-system-log org.gnome.evolution org.gnome.settings-daemon.plugins org.gnome.Terminal.ProfilesList org.gnome.shell.app-switcher com.canonical.unity-gtk-module org.freedesktop.Tracker org.gnome.Contacts org.gnome.gedit.state org.gnome.gedit.preferences.ui org.gnome.rhythmbox.plugins.magnatune org.gnome.documents org.gnome.FileRoller.Dialogs.New org.gnome.gedit.plugins org.gnome.settings-daemon.plugins.gsdwacom org.gnome.desktop.a11y.mouse org.gtk.Settings.Debug org.gnome.shell.extensions.screenshot-window-sizer org.gnome.desktop.wm.preferences org.gnome.seahorse.recipients org.gnome.gedit.state.history-entry org.gnome.online-accounts org.gnome.mutter.keybindings org.gnome.settings-daemon.plugins.xsettings org.gnome.FileRoller.Dialogs.LastOutput org.gnome.Empathy.conversation org.gnome.nautilus.window-state org.gnome.gedit.plugins.terminal org.gnome.yelp org.gnome.libgnomekbd.keyboard org.gnome.gnome-screenshot org.nemo.privacy org.gnome.DejaDup.GDrive org.gnome.evolution.plugin.prefer-plain org.gnome.shell.window-switcher com.ubuntu.notifications.hub org.gnome.seahorse org.gnome.settings-daemon.plugins.media-keys org.gnome.totem.plugins.opensubtitles org.gnome.Empathy.sounds org.gnome.settings-daemon.plugins.color org.gnome.evolution-data-server org.gnome.totem org.gnome.baobab.preferences org.nemo.icon-view org.gnome.FileRoller.Dialogs.Add org.gnome.settings-daemon.plugins.gdu-sd org.gnome.evolution.plugin.publish-calendar org.freedesktop.ibus.general.xkblayoutconfig org.gnome.settings-daemon.plugins.xrandr org.gnome.baobab.ui org.gnome.shell.extensions.classic-overrides org.gnome.desktop.a11y.keyboard org.gnome.settings-daemon.plugins.orientation org.gnome.desktop.a11y org.gnome.system.proxy.socks org.gnome.desktop.interface org.freedesktop.Tracker.FTS org.gnome.system.proxy org.gnome.mousetweaks org.gnome.gedit.preferences org.gnome.desktop.lockdown org.gnome.settings-daemon.plugins.housekeeping org.gnome.Empathy.notifications org.gnome.desktop.a11y.applications org.gnome.mutter.wayland.keybindings org.gnome.rhythmbox.sources org.gnome.settings-daemon.plugins.rfkill org.gnome.gedit.preferences.print org.gnome.evolution.spamassassin org.freedesktop.Tracker.Miner.Files org.gnome.Maps org.gnome.settings-daemon.plugins.datetime org.nemo.sidebar-panels.tree org.gnome.Evince.Default org.gnome.rhythmbox org.gnome.settings-daemon.plugins.clipboard org.gnome.libgnomekbd.preview org.gnome.desktop.default-applications.office.calendar org.gnome.mines org.gnome.shell org.gnome.Empathy.hints org.gnome.Terminal.Legacy.Settings org.gnome.brasero.config org.gnome.desktop.screensaver org.gnome.eog.plugins org.gnome.system.locale org.gnome.settings-daemon.plugins.updates org.gnome.desktop.wm.keybindings org.gnome.eog org.gnome.system.proxy.ftp org.gnome.evolution.addressbook org.gnome.sudoku org.gnome.gedit org.gnome.Disks org.freedesktop.Tracker.DB apps.nautilus-pastebin org.freedesktop.Tracker.Needle org.gnome.evolution.bogofilter org.gnome.mutter org.freedesktop.folks org.gnome.gedit.preferences.encodings org.gnome.evolution.importer org.gnome.FileRoller.Listing org.freedesktop.Tracker.Writeback org.gnome.gnome-system-monitor org.gnome.system.proxy.http org.gnome.SessionManager org.gnome.gedit.state.window org.nemo.desktop org.nemo.list-view org.gnome.desktop.background org.freedesktop.ibus.general org.gnome.Evince org.gnome.Empathy.ui org.gnome.baobab org.gnome.evolution.calendar org.gnome.brasero org.gnome.settings-daemon.peripherals org.gnome.desktop.peripherals com.ubuntu.user-interface ca.desrt.dconf-editor.Settings com.canonical.indicator.sound org.gnome.desktop.notifications org.gnome.gedit.plugins.time org.gnome.gedit.plugins.filebrowser.nautilus org.gnome.Empathy.location org.gnome.Charmap org.gnome.FileRoller org.gnome.Weather.Application org.gnome.Cheese org.gnome.gedit.plugins.filebrowser com.ubuntu.sound org.gnome.desktop.peripherals.mouse org.gnome.crypto.pgp org.gnome.FileRoller.General org.gnome.GWeather org.gnome.settings-daemon.plugins.screensaver-proxy org.gnome.desktop.default-applications.office.tasks org.gnome.Empathy.call org.gnome.books org.gnome.desktop.app-folders org.gnome.gedit.preferences.editor org.gnome.settings-daemon.peripherals.smartcard org.gnome.gnome-system-monitor.openfilestree org.gnome.nautilus.list-view org.gnome.SimpleScan org.gnome.nautilus.icon-view org.nemo.compact-view org.gnome.rhythmbox.plugins.iradio org.gnome.desktop.peripherals.touchpad org.gnome.gnome-system-monitor.memmapstree org.gnome.DejaDup.File org.gnome.Music org.gnome.seahorse.manager org.gnome.evolution.plugin.external-editor org.gtk.Settings.FileChooser com.ubuntu.touch.sound org.gnome.DejaDup.S3 org.gnome.settings-daemon.plugins.remote-display org.gnome.shell.keyboard org.gnome.libgnomekbd.desktop org.gnome.shell.extensions.user-theme org.gnome.calendar org.gnome.gedit.state.file-filter org.gnome.mahjongg org.gnome.shell.calendar org.gnome.settings-daemon.plugins.background org.freedesktop.Tracker.Miner org.gnome.settings-daemon.plugins.a11y-keyboard org.gnome.Charmap.WindowState org.gnome.telepathy-account-widgets.ui org.gnome.rhythmbox.plugins.visualizer org.gnome.settings-daemon.peripherals.input-devices org.freedesktop.Tracker.Store org.gtk.Settings.ColorChooser org.gnome.desktop.privacy org.gnome.system.dns_sd org.freedesktop.ColorHelper org.gnome.rhythmbox.plugins.grilo org.gnome.desktop.a11y.magnifier org.gnome.seahorse.nautilus org.gnome.rhythmbox.plugins.replaygain org.gnome.rhythmbox.plugins.ipod org.gnome.rhythmbox.plugins.daap org.gnome.desktop.default-applications.office org.gnome.rhythmbox.rhythmdb org.gnome.desktop.sound org.gnome.evolution.mail org.gnome.desktop.datetime org.gnome.Vino com.ubuntu.touch.network org.gnome.rhythmbox.podcast org.gnome.evolution-data-server.addressbook org.gnome.evolution.plugin.templates org.gnome.evolution.plugin.mail-notification org.gnome.desktop.peripherals.keyboard org.gnome.settings-daemon.plugins.mouse org.gnome.settings-daemon.plugins.sharing org.gnome.crypto.cache org.gnome.rhythmbox.plugins.audiocd org.gnome.gedit.plugins.pythonconsole org.freedesktop.ibus.panel org.gnome.photos com.ubuntu.phone com.ubuntu.touch.system org.gnome.FileRoller.UI org.gnome.FileRoller.Dialogs.Extract org.gnome.FileRoller.Dialogs org.gnome.desktop.input-sources org.gnome.Evolution.DefaultSources org.gnome.desktop.default-applications.terminal org.gnome.eog.ui org.gnome.rhythmbox.plugins.android org.gnome.system.location org.gnome.rhythmbox.plugins org.gnome.shell.keybindings org.nemo.sidebar-panels org.gnome.libgnomekbd.indicator org.gnome.FileRoller.FileSelector org.gnome.settings-daemon.plugins.sound org.gnome.settings-daemon.plugins.power apps.gtkhash apps.gtkhash-properties org.nemo.window-state com.canonical.indicator.appmenu org.gnome.settings-daemon.plugins.keyboard org.nemo.plugins org.freedesktop.ibus org.gnome.rhythmbox.sharing org.gnome.brasero.display org.nemo org.gnome.desktop.session org.gnome.settings-daemon.peripherals.touchscreen org.freedesktop.gstreamer-0.10.default-elements org.gnome.gnome-system-monitor.proctree com.ubuntu.update-notifier org.gnome.nautilus org.gnome.desktop.peripherals.trackball org.gnome.meld org.gnome.evolution.eds-shell org.freedesktop.ibus.general.hotkey org.gnome.desktop.thumbnail-cache org.gnome.desktop.thumbnailers com.canonical.Unity.Lenses org.gnome.gedit.plugins.externaltools org.gnome.nautilus.preferences org.gnome.gnome-system-monitor.disktreenew im.telepathy.MissionControl.FromEmpathy org.gnome.brasero.filter com.canonical.indicator.messages org.gnome.DejaDup.OpenStack org.gnome.gedit.plugins.drawspaces org.freedesktop.Geoclue org.gnome.desktop.file-sharing org.gnome.shell.extensions.native-window-placement org.gnome.DejaDup.GCS org.gnome.DejaDup org.gnome.rhythmbox.plugins.lyrics org.gnome.settings-daemon.peripherals.mouse org.gnome.rhythmbox.plugins.generic-player org.gnome.evolution.plugin.email-custom-header org.gnome.gedit.plugins.wordcompletion org.freedesktop.Tracker.Extract org.gnome.shell.extensions.window-list org.gnome.settings-daemon.plugins.print-notifications org.gnome.totem.plugins.pythonconsole org.gnome.Empathy org.gnome.nautilus.desktop