I think it would be ironic if in future canon material Snoke turned out to be Plagueis’ failed attempts at cloning a host body for himself once he died, so he didn’t have to jump into another apprentice once that time came. But, Palpatine eventually did kill Plagueis and discovered his master’s failed experiments.

Then after Palpatine’s “death”, Palpatine made use of his master’s clone bodies as puppets until he could remove the incorruptible Luke and his Jedi from the picture.

If a clone body can’t host a Force spirit, then it would explain why they just reanimated Palpatine’s own corpse instead of cloning him a fresh body.

I like the idea of Snoke being a puppet, because the imagery is already there. Think of how Snoke moves Rey around like a puppet on a string.
And also, not directly related, but the line, “tied on the end of a string”. Maybe I’m grasping for straws, or should I say strings? There’s also a lot of parallels between Snoke and Oz, the massive holograms, the giant curtain in his throne room. And Palpatine is the Man Behind the Curtain.

If Palpatine used the voice of his apprentice to manipulate young Ben, it’d also make sense for him to use the voice of his master. I think it’s fitting. And to me the line, “I have been every voice you’ve ever heard inside your head” implies that Sidious did in fact control Snoke.