Building, building_open_schedule. Description "Reference to the schedule containing indicating when the building is open".
Enumeration "LightingSpaceOptions2019ASHRAE901T951TG38". Seems to me a better name would be "Lighting BuildingArea Options..." because it's an enumeration for lighting_building_area_type within BuildingSegment. I was a little confused at how a building segment would be assigned a space type, but when looking at the enumeration list, I see they are building area types.
BuildingSegment, zones. The description would be a bit more accurate as "Zones in the building segment".
BuildingSegment, heating_ventilation_air_conditioning_systems. Description could be "HVAC systems in the building segment"
Suggestions provided by Kolderup:
containingindicating when the building is open".