The ETL's from Staging to Core are always site specific. They don't come OOTB and you won't find them in the AML documentation.
You will need to get your hands on the documentation created at your site.
If implemented properly via SAS DIS: There is impact analysis, some reporting and you can also look into the jobs to graphically see which tables get used.
In the AML project I'm currently in Core is implemented in Oracle and gets loaded via a non SAS ETL tool.