TLJ was surprisingly smooth also, with Snoke again being the weirdest part. It does not seem at all hinted at that he is a cloned vessel, so I prefer to think of him as a Dooku-esque recruit with a history all his own that we don’t see.
I mean, I agree that it isn’t suggested at all that he is a clone vessel. Mostly because that is such an outlandish concept, at least until you see TROS.
Rather, Snoke is very clearly exhibiting very Emperor-like speech, behaviors, and characteristics. Right down to even showing the protagonist the destruction of all of her friends in his window. Until TROS, this could just be perceived as lazy writing. But now, I look back on Snoke in TLJ as it subtly suggesting that he is either very fond of Palpatine, or he IS him (at least in part). Maybe that’s just my view though.