This is all actually better nowadays. There was an in between place where CSV/TSV/FTP style systems were being taken over by vendor proprietary XML blobs for eh

This is all actually better nowadays. There was an in between place where CSV/TSV/FTP style systems were being taken over by vendor proprietary XML blobs for ehealth stuff when they were trying to (poorly) push ehealth. So the variety was crazy (and I'm still not sold on the huge XML style documents though I know it's "semantic"). I'm not as close to it anymore, but my big sense is that things have settled down A LOT and become more standardized. In the bigger EDI space UBL was supposed to be the XML standard that was going to crush the "old" standards - but I haven't seen it take over yet - but not close enough to space, someone else probably knows better if UBL or similar is the clear dominant player these days.