lots of foods have potassium, salt water fish, pork, lamb, tomatoes, cabbage, broccoli. Personally, I don't like fake salt (mainly because its fake), There are so many better sources to get potassium.
Iodine is in shellfish, seaweed, eggs, meat, dairy, and salt water fish. Personally I've been making the switch from mortons iodized salt to sea salt, since sea salt has trace minerals from the sea in it. I also like the taste of sea salt better.