One of my personal conventions on stories with many duplicate submissions is to try to list those sources within the first / main discussion. Recent example:

One of my personal conventions on stories with many duplicate submissions is to try to list those sources within the first / main discussion. Recent example: <https://news.ycombinator.com/item?id=41248551 https://news.ycombinator.com/item?id=41248551> (I haven't hit on a standard notation for this though I've noted "other submissions" in some cases.) Karma, schwarama.