How do I get SAP SF Employee Central texts for codes?

In our project we read data from SAP SF (Success Factors) Employee Central via ODATA. We read the ODATA API Objects via f"https://{sap_sfapi_url_dev}/odata/v2/{odata_api_object}/?$format=json"

For the Object PerPersonal we get gender, maritalStatus, nationality, religion, salutation, and title as codes.

How can we lookup / get texts for this codes?

Additional Details:

In ODATA Via maritalStatusNav, religionNav, ... I did manage to lookup codes to another code: externalCode, but how to lookup this external Codes to meaningful texts?

Due to the recommendation in "SAP SuccessFactors Employee Central OData API: Reference Guide (V2)" We tried to to replicate data using Compound Employee. But later found the SAP Note 3227789 which states that codes can not be resolved to text using the CompoundEmployee API.