I am in the Chicago area.
Here is where I shop and what for (at least what I can remember):
Walmart
name brand breakfast cereals and granola
Tetley tea
Coffee - we like Dunkin Donuts ground coffee (French press, not Keurig)
TP
Walmart brand almond milk ('Great Value')
Eggs (if under a dollar a dozen)
Bread flour
frozen waffles
Walmart own French bread ($1 per loaf, nice for French toast, making a dinner stretch a bit)
tampons
pads
Walmart brand Claritin, Alka Seltzer cold medicine
crackers
Carmex lip balm
Big packets of freezer bags (60 per box)
Big packets of sandwich size bags (200 per box)
Foil
paper towels
Parchment paper for baking
Hispanic brands of vanilla, herbs, spices
Deodorant
some meats - smoked turkey sausage (Ekrich brand), salami
Cat litter
packets of family socks, underwear
milk
Detergent, dishwasher detergent, dish soap
Aldi
Chips
salsa
milk
eggs
butter
ordinary orange and pale yellow cheese (I won't call it cheddar)
frozen green beans grown in Netherlands
frozen peas and corn
tortillas
tomato paste
tomatoes crushed
all canned beans, canned chili beans
sometimes almond milk (own brand)
orange juice
milk
Aldi own brand laughing cow type cheese
Aldi brand TP, 12-pack
Aldi brand choc chips
All purpose flour
sugar of all kinds
cocoa
Christmas - German chocolate Santas and choc coins, choc truffles
New Zealand lamb if available, for special occasions. (Hardly ever available)
table salt
crackers
plonk
cooking oil
Local grocery stores that carry Centrella own brand items
(In my case, a place called Pete's Fresh Market and another called Super Tony's Finer Foods )
all meats with only a few exceptions
spices - middle Eastern, Mexican
10-lb bags of basmati rice for under $10
couscous
stuff like bags of tapioca
most fresh fruit and veg
most deli items including local specialties like Polish sausages
their own house Italian sausage and Halal lamb sausage
frozen tortellini
frozen potstickers
frozen pierogies
kefir
Greek yogurt/middle eastern yogurt/tworog (= Russian/Polish quark)
laughing cow cheese
rye crackers/Wasa brand crackers
pasta - there is always a sale of some brand of pasta. I stock up if I can find a lb of pasta for under $1. My most recent haul was ten packets of various pasta shapes for 59c per packet, organic, imported from Italy.
Hispanic brands of vanilla
Cheap (Hispanic) brands of herbs, spices and dried garlic and onions
breakfast sausage
bacon
Alpen
vodka
gin
sometimes plonk
Polish /European flour (there is a difference)
Sliced whole wheat bread for sandwiches/toast - Koeplingers brand
Polish sausage brands
Blackcurrant drinks
Sunflower oil
Local chain grocery - in this case Jewel
fizzy water - own brand
digestives
Branston pickle
bagels - good deal of a dozen mix and match big bagels for $5 on Sundays
in-store prepped fried chicken ('cheap chicken Mondays')
white potatoes, sweet potatoes
frozen (oven) chips
deals on frozen fish products during Lent
frozen pizza
frozen fruit
pickled herring
Dollar Store
sea salt
cake mix
ginger snaps
cotton balls
q-tips
greeting cards
wrapping paper
otc medicines like nasal decongestant, immodium
plasters (band aids)
kitchen sponges
magic eraser sponges
kitchen/bathroom cleaner ('Awesome Bang')
cleaning cloths
rubber gloves
Dried onions/garlic/herbs/black peppercorns in grinder
hand soap
Sally Beauty
big containers of conditioner and shampoo
face mask
Whole Foods Market
Cat food
Bulk Israeli couscous
Bulk lentils
Bulk spices and herbs
Bulk nuts
Almond flour/meal
Bulk dried fruit (Christmas)
Christmas turkey
splurge items like decent cheese
Barbara's brand breakfast cereal
Trader Joes
plonk
decent cheese
Walgreens
tampons, pads, makeup
Target
bread machine yeast
Target brand choc chips
Target brand vitamins and supplements
school supplies
university dorm room supplies
detergent occasionally
Carniceria Jimenez
fresh fruits and veg
tortillas
A middle eastern grocery whose name I get wrong, miles away
lamb's liver (only occasionally, don't worry)
Marshalls/TJ Maxx/Burlington Coat Factory
Cookware
towels
sheets
shower caddy
nice Italian or French soap that lasts way longer than shower gel, smells better, and doesn't give the family a rash
socks, underwear, bras
I had four DCs aged 16 to 24 and myself at home this summer and spent about $75 per week on groceries and sundries.
I bake and pre cook and freeze a lot.