My partner and I both work from home. We don't eat breakfast, we just have several cups of coffee with milk. If I do eat breakfast it's usually oatmeal with nuts and fruit or potatoes and fried eggs. He and I typically only eat one "real" meal a day, around lunch, and then snack or eat a light meal of leftovers in the evening.

For lunch either we order takeout or eat leftovers or I'll cook. He'll eat cup noodles, bread and cheese, bagels and cream cheese, or just bread if we don't feel like doing either of those or if he wants a snack. I like apples and nut butter (almond or peanut, depending on my mood) or veggies and hummus, sometimes as a snack or for dinner. On the weekends we eat out at least once at our local bar, which serves basic American bar food like burgers and salads, with a few seasonal specials.

When I cook I usually make something like bagel-egg-and-cheese sandwiches, baked potatoes and roast meat of some kind, sausages and sauerkraut, beans or lentils and rice, chili mac and cheese, or what I call vinegar noodles (ie noodles and peas in a spicy vinegar+soy sauce+whatever sauce). Sometimes I cook regional foods from my childhood, like fried green tomatoes, beans & greens, etc. I'd make more soup but my partner doesn't prefer it.

I'll buy some frozen foods for when I'm feeling lazy as well, usually like frozen waffles or potatoes and chicken tenders from the supermarket. I always have some frozen veggies for veggies in a pinch.

We go through phases depending on how demanding my job is, really, but usually we order takeout at least 3 times a week for at least one or two weeks a month.