Unlock your displays on your Mac! Flexible HiDPI scaling, XDR/HDR extra brightness, virtual screens, DDC control, extra dimming, PIP/streaming, EDID override and lots more!
I don't know much about Raycast, but BetterDisplay has extensive CLI support (as well as notification dispatch based integration support) which should allow any external app to built upon much of its functionality.
It would be nice to use Raycast for controlling BetterDisplay. I have a pro licence.