Ultimate baby registry essentials (updated!)

Baby #2 will be here soon!! I'm not having a big shower like last time and haven't send out my registry link much but I am purchasing a few things I really wish we'd had the first time around. Plus, I looked back at my registry post and first 4 weeks newborn essentials post from 2 years ago when we had Otto and while I still stand by those recs!!!, some items are no longer available or I've found better replacements for. (There's a lot more selection now even just compared to 2018!) 
It's time fo...