I'm sure mumsnet has researched what people consider to be essential, but there are quite a few items on the list that I never used, and DS is now 10 months.
Cot/Crib/Moses basket- we had one of each. DS refused to sleep anywhere but in our bed.
Pram- due to stairs up to our flat and frequent use of buses and tube, I have never bought a pram or pushchair. Borrowed one once and hated it, so did DS. Research good slings if you aren't sure you need a pram. Do not buy the one everyone buys, there are much more comfortable options that make carrying easy.
Bottle steriliser/ breast pump- by no means essential. I did start to express after 6 months but I hate it and only do it so I can work part time and continue ebf. Don't buy a pump unless you are sure you need to express.
Baby gym/ nest- I had 3, baby found all of them frustrating and confusing until about 5 1/2 months, when he liked to bite the hanging down animals then by 7 months he was crawling and not interested. However, wish we had bought a jumparoo or similar. He looooved those when we tried them.
Wipes/ cotton wool- many of my friends have found baby wipes cause nappy rash- their skin really doesn't cope well with the chemicals... We used bamboo washable wipes from the beginning which have been fab.
Think that's all. Other stuff on the list did look essential. HTH