Nice ones! If it weren’t for those, I would have said Base Pikachu as well. Considering I own 115 different Base Set Pikachu variations, and there are still a few I’m looking for, I don’t think any other artwork will come even close that that amount. (The 115 I own are including autographed and miscut cards tbh, excluding those there would be ~75. Here my Base Set Pikachu article to see all of them.)
Greetz,
Quuador