I was thinking Gene Tierney just because of the manipulative feel I got from her from Leave Her to Heaven. My favourites of your sets are cersei and Sansa…sophie Turner as Sansa doesn’t work for me, but yours does look like how I pictured Sansa!
Gene could work that way. I think the problem with Marg is that we don’t really know that much about her since we mainly see her through very biased povs (I’m thinking about Cersei in particular, she tends to project her own personality onto Margaery a lot I think, so many of the more manipulative/femme fatale-ish interpretations of Margaery’s character are due to that imo, although there’s definitely a basis of truth to that interpretation). So with some characters I tend to go more with looks (I mean, my first three fancasts were of long dead minor characters so duh.)
And yeah, unpopular opinion but I agree about Sophie, I always pictured Sansa as more sweet looking, and Moira Shearer is just perfect for that 🙂