The four minerals in Daily Greens+ are the ones that show up most often in UK shortfall data. Zinc, copper, iodine and chromium. None of them get the marketing attention of magnesium or iron, but all four are essential for everyday function.
The bigger story with minerals isn't the dose, it's the form. Mineral compounds in supplements come in different chemical pairings, and those pairings determine how much your body can actually absorb. The cheapest forms (zinc oxide, magnesium oxide, copper sulphate) absorb poorly. They look good on a label because the dose is high, but most of it passes through.
The bioavailable forms (bisglycinate, gluconate, picolinate) cost more to manufacture but actually get into your bloodstream. The dose can be lower and the effect higher. This is one of the bigger differences between a budget multivitamin and a well formulated one.
Iodine specifically is one to watch in the UK. Sweden, Switzerland and most of the US iodise their table salt as a public health measure. The UK doesn't, and our intake has fallen as people eat less dairy and seafood. Mild iodine shortfall is now common, particularly in women of childbearing age. Daily Greens+ doesn't fix that single handed, but it contributes.