To add, as this post has taken a lot of effort and is a helpful guide.
Cast iron pans are best cleaned with salt and kitchen towel over low heat to preserve seasoning. I would be beaten to death back in the day by my head chef if I cleaned cast iron with soap, it will destroy seasoning as seasoning bullds up flavor as well. We had cast iron pans exclusive for meat, for fish, for pancakes and so on. Salt and kitchen towel is all you need.