A lot of amazing ones have already been named (and I’m glad to say I do own all of them 
).
I was about to post dozens of other Pikachu, but I deleted them again in my draft-post. I’ll let others post cards instead.
Some cards that flew under the radar in my own collection, and I kinda forgot I even had, I will post though. Especially that first one I completely forgot about.
Anyway, take a look at my ‘Pikachu around the World’ collection posts, especially the Japanese part, to see a lot of other Pikachu that fly under the radar. 
Greetz,
Quuador