The best socks for outdoor comfort in Alaska are made of Merino wool or synthetic fabrics. Rather than absorbing moisture, these fabrics wick away perspiration.
Snow pants are recommended for the winter months. If you are chasing the northern lights in Alaska they are 100% a must. For any other season, do not pack them, you will not need them.
You will need some good gloves when you are exploring Alaska. I would also recommend a waterproof pair. You want your hands to stay warm and that’s hard to do in the Alaskan environment.