Yeah, let’s not modify the Ochi stuff any further.
I really want to steer clear of everybody being related to each other, especially with the Reylo kiss. The power in them is of the Force manifest in both its aspects (powerful light, powerful dark), not Palpatine’s, but he is claiming that they are his own creations regardless because he claims mastery over the whole Force. I like what we currently have because Luke is refuting Palpatine’s involvement in creating them by saying they were meant to kill him, but then later on Palpatine says that’s what he always wanted them to do. So perhaps he did still have a hand in creating them. It just gives us yet another twist moment, and leaves us unsure which of these narratives is the truth.