This may refer to special editions, one offs, custom issues, or any other non series issue
For non-series comics the mint quantities will be particular to each drop. There may be any number of different types of non-series issuances. These may be from the Lore Stories collection, be an artists special edition, a one-off issuance or any number of different things.
For non-series comics the packaging may differ from the standard series packaging, although it may have similar mechanics as well. These packs will all have their own arrangement and you will need to check drop details.
For non-series comics there will not be a standard pack type. Each pack will be specific to that drop. For certain non-series comics it may not include a pack at all.