Here are pictures of each when they were about 8 weeks old. It is funny because I recognize their personalities already.

This is Sophia...looking somewhat skeptical, not too impressed with much, and ready to cry at any moment. She had a lot more hair, although darker color. A few pounds lighter too.

Here is sunny, happy Everett smiling away. Lighter and less hair with his prominent hairline. They both have blue eyes.
I think they have the same nose for sure. I don't know about any other similarities. And NO, they don't look like Grandpa Barson!