whew, a tough one. I can share with you a statement to determine how to find out what Workflow a specific job (or other object) is task of, but to list all jobs parents is not very easy, but maybe to be archived using a SQLI Vara Object which is feed out of a VARA Object with a list of the JOBS you want to check might do the job, even if it might take a lot of programming work:
select OH_Idnr, OH_Name, JPP_Object from JPP
inner join OH on OH_Idnr = JPP_OH_Idnr
where JPP_Object = 'JOBS.WIN.HEA.TEST'
this is just to find out the parents of one single object, but of multiple or all of the client/system... this might need someone with more DB and Automic Knowledge than I have.