csv is many times over again a simpler format than sqlite and easier to understand by anyone across the world.
Never heard of ndjson, can’t see one publishing this data in a format that isn’t nearly as common as something like csv (or regular json which some of the data is published in).
CSV only seems simple. Lots of parsing edge cases. Sqlite isn't readable by hand but it's basically bulletproof. NDJSON is literally just newline seperated JSON, it's just easier to process as a stream without a special parser.
Unless you involve MS Excel or, worse, MS Excel on macOS. OTOH, pitfalls are: UTF-8 BOM, comma vs semicolon, single vs double quote, multiline cell content and escaping, escaping in general...
Never heard of ndjson, can’t see one publishing this data in a format that isn’t nearly as common as something like csv (or regular json which some of the data is published in).