@SarahThompson6 awesome! Thank you that's perfect. We wanted lists of domains. This provides the list of fields and their domains. This following SQL query I found lists the all the domain values for codes and descriptions. The combination provides the full schema for consideration by project stakeholders.
WITH domains AS (SELECT items.uuid AS domain_id, items.Name AS "Domain" FROM dbo.[GDB_ITEMS] AS items JOIN dbo.[GDB_ITEMTYPES] AS itemtypes ON items.Type = itemtypes.UUID WHERE itemtypes.Name = 'Coded Value Domain'), fcs AS ( SELECT items.uuid AS fc_id, items.name AS Feature_class, DatasetInfo1 As geom_col FROM dbo.[GDB_ITEMS] AS items JOIN dbo.[GDB_ITEMTYPES] AS itemtypes ON items.Type = itemtypes.UUID WHERE itemtypes.Name = 'Feature Class') SELECT Feature_Class, domain FROM [dbo].[GDB_ITEMRELATIONSHIPS] JOIN domains ON domain_id = DestID JOIN fcs ON fc_id = OriginID ORDER BY Feature_class
This also apparently lists fields mapped to domain. These queries can be copied and saved to text and opened in Excel from SQL Server Management Studio.
SELECT
i.Name AS FeatureClass
,xVal.value('Name[1]','nvarchar(max)') Field
,xVal.value('DomainName[1]', 'nvarchar(max)') Domain
FROM GDB_ITEMS i JOIN GDB_ITEMTYPES it
ON i.Type = it.UUID
CROSS APPLY i.Definition.nodes('/*/GPFieldInfoExs/GPFieldInfoEx') dx(xVal)
WHERE i.NAME IS NOT NULL
AND xVal.value('DomainName[1]', 'nvarchar(max)') IS NOT NULL
ORDER BY i.NAME