I’ve been using Google Keep as my shopping list and really like the ability to have a nested list. I use it to organize items by aisle because I always go the same route in the store and hate it when I forget something on the other end of the store. It could also be used to organize the list by meals.
Ultimately what I’d really love is to be able to select which meals we’re eating this week and have all of the ingredients added to the list by store aisle/area. I could probably do that if multiple independent shopping lists were an option or if items could be added nested under a higher level item (e.g. trigger a meal automation to add ingredients to the appropriate aisle lists/level)