Statistics
sav (SPSS), xpt and sas7bdat (SAS)

The formats no cloud console will ever open, read here as tables: the variables, their labels, and the rows — with the same column summaries and the same SQL as a parquet file.
That means a .sav from a survey and a .parquet from a warehouse join in one query, without either of them being converted first.
Next: documents.
