Agree with @DottyShrimp that Rydes Hill is lovey, they do take a broader intake, however as they are small, they really do focus on everyones individual needs. They've always been known as incredibly nurturing and friendly. They seem to provide a good "value add" to those who might join at the bottom of the academic scale and finish much higher than they would've done elsewhere. For smart kids, they focus on their needs too and do get them into decent locals like GHS, Tormead, Priors Field and St.Cats.
PP you also mentioned that you didn't like Tormead for its 'to 18' model. Remember of course that just like the other three main schools, most wouldn't pick them solely for their Junior provision, with a view to move at 11+. As such none of these three schools prepare for the 11+ like a traditional prep school might, they expect girls to stay, and that't certainly not a bad aspiration to have!
I also agree that GHS is highly regarded, in fact it's "nationally highly regarded" as a top 10 school. However, down the chain, I think the term "highly regarded" becomes "highly subjective".
So, when you compare Tormead to St.cats, for example, it's very much courses for horses (especially as exam performance seems to be slowly closing even in the years even preceding covid). What I mean by this is that they are both very different physical offerings (small compact town / large open country), the culture is different too, with Tormead a little more "modern" with a leafy, suburb feel to it, whereas St.Cats has stacks of "traditional", countryside hues!
I think the OP just needs to decide if she wants a really good pre-school to get her DD ready for whatever she might want (in a few years time, i.e. things could change!) or whether she wants to commit straight into a large (girls only) through school, like one of the 4 in Guildford, or, of course, somewhere else locally.
Best of luck OP! SOOOOOOO many great schools... In a great part of the world!