Do you add salt to meals or whilst cooking at the moment? Do you regularly eat the salt food you mention? Because you say cut down, so there could be some easy wins.
For things like cheese and try an£ use smaller amounts so you get the flavour but they aren't the main event. This works well with cheese if you swap to a stronger variety, so you need less of it for the flavour and reduce the amount by using a finer plane on your grater.
Look to replace salt with other flavourings, garlic lemon or lime juice, garlic, herbs and spices. Where possible cook from scratch. A tomato sauce with onions, garlic, black pepper, basil and oregano doesn't need salt. You can make a pizza much lower in salt by using a flour and Greek yoghurt dough for you base, making a tomato sauce as above and then choosing lower salt topping. Pepperoni and anchovies are always going to be high salt but chicken, veg, pineapple etc are absolutely fine. Mozzarella is one of the lower salt cheeses.
Meat like chicken and steak are fine without salt. We eat a lot of tray bakes with various chicken, fish, veg and just flavour with things like cumin, turmeric, ginger, garlic and olive oil.
Things like chilli or curries (mild for your husband) are ideal for a low salt diet. If you use butter in your cooking switch to olive oil.
Fish in parchment paper with spring onions, ginger, garlic and lime. Serve with rice and veg.
Chicken breasts with garlic mushrooms in a cream sauce
Homemade fish cakes
Chicken and leek risotto (up the white wine!!!)
Fritata
Shakshuka
I'm not sure I can think of a low salt alternative to crisps, although there are some lower salt varieties market.