Thank you for the list.
There are some food items that I disagree on, but for the majority, it's good.
There are a few threads of food list threads.
Lettuce is not nutritional for budgies, but they aren't harmful either. Many people like to use lettuce to wean budgies to eating greens because most budgies love lettuce. It is good to use the lettuce only until the budgie starts to eat other greens. lettuce should not be a part of their staple diet.
And when trying lettuce, use the dark leafy lettuce such as green Leaf or Red Leaf. Do not use iceberg lettuce. Cucumber also has no nutritional gain for budgies, but as lettuce, it is not harmful and should not be fed daily.