I really liked Claire. I thought that would be the name I would use. However, I know some other Claire's now, and there are too many people in my family with the initial C, so it just wasn't going to be practical.
Sophie occurred to me as like a 4th choice. Then I started looking at the meaning of names. My deadname has some pious religious reason. Not me. Sophie means wisdom, A quality I respect and would rather be remembered for. It's also feminine, and was popular around the time I was born. *
So it jumped the queue, and I'm Sophie now. It's come to feel natural because of it not being something I really dreamed of, it's just a name, but it fits. No middle name yet because I want my parents to chose it, but I haven't come out to them yet.
*I wanted an age appropriate name, girl's names come and go like fashion. Where are the newborn Rebeccas? 30 years ago it was the #1 name! (My ex's name, so was off limits for me, but it makes a point). Sophia is a lot more popular now, Sophie is a bit more dated, and I like that.