The problem with the checklists as your own is quite personal. I wrote my essentials list on my blog yesterday but it probably wouldn't fit with most peoples! There's usually one on babycentre, bounty, mothercare etc.
https://www.babycentre.co.uk/a559809/buying-for-baby-what-you-really-need
https://www.emmasdiary.co.uk/pregnancy/pregnancy-products/shopping-for-a-newborn.aspx