Congratulations on your pregnancy!
I got a lot more for my first child then my 4th. I did not know anyone with kids or the lifestyle when we have know when I had my first one. So i bought most of the things people said I needed, thinking they knew better than me. Ha. Ha. Ha.
With my last baby, I had only a few things.
I breastfed her til she was 14 months. I bought a breastpump after 6 days with really painfull breasts but luckily it was with 50% off. If you should bottle feed, consider a glass or stainless steel bottle because of the chemicals like BPS / BPF in plastic ones.
When breasteeding does not seem to go as planned and you want it to work, do not hesitate to ask a professional like from La Lache League or something. There is a lack of knowledge even in professionals like doktors and midwives.
I used two woolen rompers and woolen tights and had some cotton ones as back up. Wool does not get wet of dirty that quickly and is really comfy.
A (ecological) sheepskin was fantastic. In the car over the seat, in the stroller (secondhand of course ;)) or in bed. It regulates the temperature of the baby and does not feel cold when you put them (sleeping) into their bed.
With my second and third I did not even had a stroller. We used an ergobaby carrier to take her on walks.
We now use all in one washable diapers. There are the ones that can be used from day one til ca. 2,5 years and do not need extra accessoiries, besides a paper layer. (AIO-diapers). When stashing cheap diapers, give it an extra thought if you are okay with the chemicals in them. Do not mean to worry you but it is something I would have liked to know when my 1st child was born.
Burbcloths are good to have, but the KRAMA (i think) from Ikea are cheap and work fine. Maybe an extra thin cotton cloth of two to dry them after bathing.
What they do not need, imo: pacifiers. Maybe they come in handy in the beginning but when they are 1 year old and you have to wake up 6 times a night because they have lost it you wish you never gave them. Soap or frequent baths. A babybath: sink, bucket or take them with you in the shower. Fancy but uncomfy clothes. Shoes. More than 2 bottles. A bottle steriliser. Baby-monitoring-things. Baby's are used to constant noises in the belly and sleep very well when they are near you so that is even safer, I think. Swimsuits. 'Educational' toys. Most toys, actually. Diaper changing station: your kitchentable or couch is fine.
But it can be tough to resist those things, when society seems you need them all. Or grandparents. Friends. Healthcarepeople.