I grow my own veg so what goes in a salad is usually what is available to go in a salad.
Winter salads are spinach, claytonia, lettuce, kale, any herbs with maybe caramelised onion and pepper and some feta. With sundried or preserved tomato possible also cooked with the onion and pepper. With anything pickled that I have in the fridge that is open.
Spring, whatever greens and herbs are there, spring onions, pickled courgettes etc. Might add some shredded and fried cabbage, kale, chard etc as well.
At the moment all my salads have some mange tout as I have a gazillion growing at the moment.
Once the tomatoes come, I have a bowl of tomatoes, olive oil and fresh basil, spring onions and smashed cucumbers. Or a chilli, tomato, coriander, mint and if lucky, tomatillo mix.