Based Spain, China (See Below), Madagascar and Belgium
(Thanks to @Sea_Gull for bringing this map to my attention!)
Edit: Since this used Google data, China is notably missing here, but if a commenter on a random Nintendo fan site covering this is to be believed:
"I'm currently living in China and I can say first hand people LOVE psyduck and slowpoke. they're in memes and KFC toys and everything"
China stay winning.
What?
JIM is evolving!
The full evolutionary line is John -> Jim -> Jimothy