For my first I only packed her 2 outfits, socks, extra clothes for me and money and chap stick that was it. Worked out fine. Doing the same with baby #2. No need to over pack unless you know you'll be staying there a while.
Only Thing You need is Your Clothes and the baby Clothes , cause the Hospital Provide. All the other stuff .
Adding to the list... Maybe makeup for the professional pics, a few outfits for baby since the pictures might not be on the same day as your release from the hospital, nursing bra, comfy socks.
Pads, comfortable loose clothes, hair brush, tooth paste and brush, deorderant, comfortable PJs, blanket, soap, shampoo and conditioner, camera, cell phone charger, babies first outfit.
I have a hospital bag list in my journals.