BCM94360CS2/BCM943224PCIEBT2 Card To NGFF(M.2) Key A/E Adapter For Mac OS and Hackintosh
https://www.amazon.com/dp/B01JGERLOS/ref=cm_sw_r_cp_apip_V5Y2aRt7ZiVI2
Card I use is one pulled from a legit Mac laptop- can't remember which one.
It's been years since I looked at M2 stuff and it looks like we have different slots.
My Hackintosh is dead because I made a mistake and I'm not going to bother switching to OpenCore until I get a gfx card that can be used in something newer than High Sierra and isn't going to overheat my tiny mITX. I know handoff worked, I almost never use Airdrop so can't remember if it worked, and the other features are newer than High Sierra. iMessages and FaceTime worked though.
For what it's worth, Sidecar works WAAAY better with a cable - at least it does on my MBP+iPad Pro - so I personally wouldn't sweat it not working wirelessly.