For my baby I took...
Two blankets (useful for going home one to cover baby and the other to cover the car seat)
Two outfits, mittens, socks, hats.
That was it the diapers and wipes were provided at the hospital. I took the extras home as they are yours to keep.
You really only need clothes for baby to come home in socks hat outfit and a blanket just in case it's kinda cold
Diapers wipes (hospital does provide these as well) outfit for pictures, going home outfit socks mittens (so baby won't scratch) blanket