Sure! I think those two have the most evidence against them (and I doubt the traitor will be anyone massively important, but it will probably be someone from the class for writing impact because writing-wise you’ll want it to be someone close enough so that the reader feels betrayal, but also not someone you’ve previously set up as a hero because that isn’t how BNHA works as a story lol–it’s just not full of “I didn’t see that coming!” moments which is not a bad thing).
I think @ CDCubed on twitter does a good job outlining the Hagakure evidence in this thread and here’s some on Kaminari.
I personally prefer Kaminari because of the angst it’d set up with Jirou, but I think the evidence and the writing around Hagakure makes her the strongest candidate for right now. Each 1A class members gets some kind of focus and a mini-arc (with Todoroki, Bakugou, and Deku getting long arcs and Iida and Uraraka getting a bit more focus than the rest) and Kaminari has arguably had some of his in the Hero Exam arc, but we know absolutely nothing about Hagakure. Plus, BNHA is again subtle as a flamethrower and the irony of having an invisible girl be a traitor is. Not remotely subtle at all. So I lean towards her.
It could of course be someone else as well! But those are the ones I think have the most evidence against them. I’m also hoping with the possibility of Shinsou joining the hero course and the question of whether a spot will open up + the focus on Hawks being a double agent last arc + it’s been 84 years we might get a reveal soon(ish). But we’ll see, I can see it waiting until the series hits it nadir eventually.