Europe, Japan, Canada, Isreal, Korea, US, Singapore are some major countries where bitcoin has legal status. There are many other countries like India, Rusia those are preparing a draft for bitcoin legalization.
I agree with your list. I have read so many articles about these countries embracing and seeing the potential bitcoin has. I think, in the list, you can see the commonality with the countries supporting cryptocurrency; they are the countries that are technologically inclined and are not afraid to venture on something that despite it being new, would give a lot of good potential.