I quite like Maxwell on a girl, who cares if it's predominantly for males?
Most of the names on your list are strictly masculine, not unisex. The only unisex choices are Parker and possibly Berkley, of which I prefer Parker. Though I don't know if you'd want to lock yourselves into an "-er" pattern.
Other unisex names you may like:
I'm also a fan of Sawyer for a girl, great call on your first little girl! I love Parker or Landry as a sib with Sawyer, totally awesome! Here are some that I though of might sound nice too......
That was fun! :)
Omg I love Sawyer! For the little sister maybe
Spencer (I love this name for a girl)
Maxwell (I don't care I like for a girl)
Emery (sound like Avery but less popular)
And my absolute favorite
From your list I agree with others, Parker a great match
I really like Parker, I think it fits best with Sawyer. Good luck!