I'd be curious if the distribution of salary data from H1-B filings was more or less the same. Anecdotally for brand name companies, eg Netflix, the selection bias of Angel List data to the lower end seems to be confirmed. The database publicly searchable and I had seen a visualization once but can't find the link.
http://h1bdata.info/index.php?em=NETFLIX+INC&job=SENIOR+SOFT...