Objects:
GtkLabel.mnemonic-widget
GtkRadioAction.group
GtkRadioButton.group
GtkRadioToolButton.group

Disabled:
GtkAccelLabel.accel-widget
GtkAction.action-group
GtkContainer.child
GtkExpander.label-widget
GtkFrame.label-widget
GtkFileChooserButton.filter
GtkFileChooserButton.extra-widget
GtkFileChooserButton.preview-widget
GtkFileChooserButton.dialog
GtkFileChooserDialog.filter
GtkFileChooserDialog.extra-widget
GtkFileChooserDialog.preview-widget
GtkFileChooserWidget.filter
GtkFileChooserWidget.extra-widget
GtkFileChooserWidget.preview-widget
GtkInvisible.screen
GtkMenuToolButton.menu
GtkOptionMenu.menu
GtkToolButton.label-widget
GtkToolButton.icon-widget
GtkTreeView.expander-column
GtkTreeViewColumn.widget
GtkWidget.parent
GtkWidget.style
GtkWindow.screen

Models:
GtkCellRendererCombo.model
GtkComboBox.model
GtkEntryCompletion.model
GtkIconView.model
GtkTreeModelFilter.child-model
GtkTreeModelSort.model
GtkTreeView.model

Images, Pixbufs, Pixmaps and Animations
GtkAboutDialog.logo
GtkButton.image
GtkCellRendererPixbuf.pixbuf
GtkCellRendererPixbuf.pixbuf-expander-open
GtkCellRendererPixbuf.pixbuf-expander-closed
GtkImage.pixmap
GtkImage.image
GtkImage.mask
GtkImage.pixbuf
GtkImage.pixbuf-animation
GtkImageMenuItem.image
GtkWindow.icon

Adjustments:
GtkLayout.hadjustment
GtkLayout.vadjustment
GtkProgressBar.adjustment
GtkRange.adjustment
GtkSpinButton.adjustment
GtkScrolledWindow.hadjustment
GtkScrolledWindow.vadjustment
GtkTreeView.hadjustment
GtkTreeView.vadjustment
GtkViewport.hadjustment
GtkViewport.vadjustment

GtkText:
GtkTextView.buffer
GtkTextBuffer.tag-table
GtkTextTag.background-stipple
GtkTextTag.foreground-stipple