Anne welcome. All Haiku are nor the same. They do not all need to be about nature. I also have been looking at other forms of which American Haiku is one.
A fellow writer here is an expert in Haiku and all things associated with it. I send you a link she sent me that I hope you will enjoy. You can tell her I sent it to you. We are all friends here.
Here is a site about Issa: https://www.poetryfoundation.org/poets/kobayashi-issa
and my favorite: http://haikuguy.com/issa/
please read it and let me know what you think. I have just started using Issa and I love it.
Don’t get me wrong, I love traditional Haikus and still do. I love writing for The House of Haiku, they are wonderful people.
Nice to meet you, Anne.
Pierre aka Louise