There are over 1,000 pokemon. I think it's a Tolkien situation- where famously, you can't write fantasy without using ingredients that Tolkien created, because if you do, obviously it's from Tolkien, and if you didn't, the reader is asking why not? That kinda deal.
If you set out to create a game involving collecting, or even looking at and cataloguing, a bunch of different fantasy creatures, you're going to have some that are at least a little similar to pokemon. The electibuzz/grizzbolt example you gave is a fantastic one. You're claiming it's stolen, but that there is a cat creature with a single lightning bolt in it's belly. Versus a... monkeything? Covered in them. My point here being, even if they didn't steal (which, I'm sure they did, there are other, better examples) at a certain point you have to accept that with 1,000 pokemon, there's going to be overlap, so you either need to just be up front about the stealing, or you need to spend 5x the amount of development time making sure none of your creatures have overlap.
Personally, Pokemon has been around for more than 25 years. Even if they released a million games a year, they shouldn't get to gatekeep 'all creature-collection simulators that you use balls for and that you can ride like a dragon.' Fuck that. They got infinite money back on their initial investment, and they shouldn't be allowed to just own the ideas. This is the kind of bullshit that makes me (a lifelong pokemon fan) want to never, ever, ever give them money again.
A dear friend of mine was complaining about Greta back when she was still a kid, saying what right does a kid have to complain to nations? I huffed. I pointed out she has more right than any of us- the most of her years are ahead of her. She can't control what world she inherits, only the people she's screaming at can do anything.
Back in the 90s, when I realized what shape things were in then, my adults just told me to shut up. They said they didn't care. Greta had supporting players who let her express herself on these, the things that matter. I wish we had more kids whose parents let them address the world like this. It's going to be theirs. They should have a say in what it looks like.