Yes I would have said Koolie for Koda. My friends' ASD looks more like border colies with brown, red, and black marking. Then her sister looks more like your aussie.
Those kelpies I met while I was camping around western NSW are not necessarily friendly but they were 100% for their owners. Despite of crazy behaviour from Chookie, they would not move a bit from their owners.
I don't think I would have another dog right soon but definitely ASD and Kelpie will be on my list.