If Citrix delivery groups are not syncing to Workspace ONE Access, check the settings in the Citrix server farm. A delivery group's Delivery Type setting in Citrix determines how Workspace ONE Access syncs the delivery group.
Workspace ONE Access syncs a delivery group only if its Delivery Type is set to Desktops And Apps or Desktops Only. If the delivery group's Delivery Type is set to Apps Only, its applications are synced but the delivery group itself is not synced and does not appear in the Workspace ONE Access catalog.
Configure your delivery groups accordingly.