Add Tags or Categories for Smart Lists

Would be nice to be able to assign a user-defined category to a smart list. For example, for a grocery list, you can add a category such as produce, frozen, meat, etc. Or for to-do lists can assign a project name, or maybe a priority such as urgent. i see this as a list i write down and have a column next to where i assign the category, then when scanned and in the app, you can sort by category.