Welcome Mesopotamica!
I see you are in Israel. I live near Seattle in the USA. We are known for our rain and gloomy weather, but in reality it is a Mediterranean climate with dry summers (cool not hot like you). This means some things I have you might want, and vice versa!. I looked at your plant list, mostly it is Iris, I don't have any seeds of those. But in a month or two (maybe not in time for this swap) I will have seeds of open pollinated Iris foetidissima 'lutea' (or citrina or whatever but they are yellow). Some of mine are from North Africa. They do well in my dry shade. I germinate them by "Wintersowing" and they germinate during the second winter, so it is kind of a pain, but really fun when they come up. Anyway, you might want to take a look at my very incomplete plant list, and put here a list of seeds you want. I mess around with things from Australia, New Zealand, South Africa, and Chile as well as more typical Mediterranean plants.