Although we like making soup, we don't use recipes, just use whatever veg (sometimes cooked meat / poultry left overs, too) needs using up, which depends on what we've got from our own garden (still getting parsnips, leeks & beetroot, plus garlic harvested months ago, plus onions, spinach, beans, peas, tomatoes, potatoes etc during summer), from supermarket, usually when reduced (eg mushrooms, peppers etc) or given by our neighbour when she wants to discard out of date fruit / veg from fridge or tinned from cupboard. We just add whatever carbohydrate we want in the form of potato / rice / barley / noodles. Best not to add too much stock liquid initially, as it's easier to add more liquid than boil it off.
Only recipe I ever use is for mushroom soup, so I get the relative quantities of mushrooms and stock right. But it's copyright in a recipe book, so can't post it here.