Recommendation for aerodynamic IP camera

What with Herelink and HM30 IP bridges its now possible to use IP cameras instead of HDMI which has some great advantages.

My challenge is finding an IP camera that is small enough to stick up into the airflow without causing a lot of drag!

The old analogue FPV cameras are a great size and are not too draggy. e.g. firefly hawk 20x20mm
The IP cameras supplied by Siyi are 43x43mm front area.

Has anyone found a source for a decent miniature IP camera? (must be wired, not wifi)

Fall back is to use a HDMI to IP converter but I want to move away from anything HDMI related if I can!