I’m sure it varies from couple to couple.
I chose the name for our son. I think my husband was afraid of me while pregnant, I did turn into quite a nasty being. you try gaining 50lbs of baby. I didn’t want to follow his family tradition right away. I wanted to name the baby, but we both agreed upon the name. He helped with the middle name.
He gets to name the next child, be it a boy or girl. I’m a little bit of a wreck because of this, because I like unique names, and he likes more traditional…but, he’s letting me do the middle name for a girl (I have no say in the boy name, I’m still trying to come to terms with this)