Also not a huge fan of The Silent Patient. It was a quick read for me but I was pretty meh about it. The twist was what turned me off; it didn't feel earned to me.
I never read The Guest List but I did read Lucy Foley's The Hunting Party and didn't care for it. It wanted to be Ruth Ware's In a Dark, Dark Wood so very badly, to the point that the plot progression was eerily similar, but frankly, if I wanted In a Dark, Dark Wood, I would have just reread that, as I found it infinitely more engaging.