In this house it varies as to what I'm using them for, but in general a big fan of frozen veg for the reasons everyone else has stated - no waste and fresher.
For soup in the Instant Pot, I regularly use several different bags of frozen veg, a stock pot or two and some seasoning, then switch it on and leave it to it. (Minestrone cooking in it at the moment with frozen Med sofrito and frozen Savoy cabbage)
Frozen for eating with dinners: peas, sweetcorn, cauliflower rice (but not bigger cauliflower), spinach, fine green beans, 'Mediterranean veg' for roasting
Frozen for soup: red onions, mixed peppers, butternut squash, savoy cabbage, leeks, various different sofrito mixes (the Tesco Indian inspired one with chilli, ginger and garlic is fabulous)
Fresh: carrots, peppers, onions, celery, courgettes, cauliflower, broccoli