Starting PhD soon, stay with PC or invest in a MBP?

Hello. I'll be starting a PhD program in a medical related field soon. It's been quite a few years since being in school, and I'm surveying what hardware I might need for the program.

Currently I have an Elitebook 845 G10 with 64GB RAM. It's a near perfect machine and has covered most of my needs to date. The issue is that I also have an iPhone, and iOS just doesn't integrate well with Windows. Sharing files and photos between my phone and laptop is just a huge headache in general, and I anticipate taking a LOT of photos to complement my notetaking. I've also heard things about Excel not being as great on MacOS compared to Windows?

I can see two options here:

Option A: Invest in a Macbook Pro in addition to my existing machine. I've been a Windows user my entire life and have no knowledge of Macs, but if this is an optimal path I'll consider investing in a 14" MBP. The Air isn't as ideal as I've gotten used to laptops with high refresh screens.

Option B: I'm not willing to give up my iPhone Pro, but I can definitely grab something equally powerful as a backup phone. My studies will be in China so I have a pretty nice pool of options to choose from, including Huawei hardware. The issue here is that I haven't seen anything that integrates with Windows as well as the way Apple does, so it's more of an adventurous approach.

Thoughts?