Thumbs.db is the correct comparison in this case because we're talking about behavior i.e an unwanted file that is silently added and propogates. desktop.ini i

Thumbs.db is the correct comparison in this case because we're talking about behavior i.e an unwanted file that is silently added and propogates. desktop.ini is closer from a functionality point of view, but in practice I see much less of it compared to Thumbs.db.