There is no specific collective noun, but they would normally be known as a packet of biscuits or tin of biscuits.
Packetc
In Ireland and England alike, cookies are chocolate-chipped circular biscuits. If you're American, I think you call all biscuits cookies. If so, the answer you are looking for is biscuits.
During the Civil War, dried biscuits were called hardtack.
Biscuits.
They were originally called Rolled Oats Biscuits. Subsequently they were renamed Anzac Crispies - and later Anzac biscuits.
the butter biscuits
Plain biscuits would be considered a starch and placed in the Grains food group while cheese is obviously a milk product and would be placed in the Dairy food group. Combination foods, such as sandwiches or soups, do not technically belong to one singular food group since they can be composed of ingredients from a variety of food groups. Although, since cheese is not the primary ingredient in cheese biscuits many would place it in the Grain food group.
No
laver...or lavabread Anzac biscuits
Afghan Biscuits are a favorite home-baked treat that seem to have originated in New Zealand. There does not appear to be any memory as to why they are called "Afghan" Biscuits.
Hardtack.
shake the cat biscuits box
Biscuits!