Guys, I think I'm in heaven reading this stuff, it's a great topic.
I agree with the theory that the arranger evolved from the home organ, but the Daddy of all electric organs surely is the Hammond, especially the B3.
With regard to the clones, most of them are very good. I do like the KeyB the best, the electronic Leslie is amazing, I'd love to have one. I have read about issues with regard to quality,particularly of models made in Missouri.
I hope this is sorted, as I want to continuing dreaming about having one at some stage.

Frank