I have not seen any oscilloscope captures of an AHD signal on the internet. I am installing a backup camera in my car and selected a NATIKA WD-012. It features 720p AHD mode which my deck isn't compatible with but I wanted to get an idea of what AHD looks like signal wise. Hopefully others will find these captures interesting.
The camera setup as purchased:
For reference here are some captures of the camera in standard NTSC:
Here are the signals with the camera in 720p mode: