How to choose SDK for development

Hello everyone,

I just started using HTC VIVE PRO EYE for my school’s VR research and I found a lot of SDKs that confused me a bit. Like SteamVR, OpenVR, OpenXR,SteamVR Plugin…etc.
Any suggestions on how to choose Unity development?

For desktop VR:
OpenXR

If you need specific oculus features:
Oculus XR Plugin + Oculus Integration

If you need SteamVR features (like knuckle per finger input):
SteamVR (same as OpenVR)