There are a few different sites for comparing different dashcams and lists of the best rated dashcams on the market.

1. Dashcam Talk

Dashcam comparison Tool

2. Car And Driver

https://www.caranddriver.com/car-accessories/g46063800/best-dash-cams-tested/

3. Tech Rader

https://www.techradar.com/best/best-dash-cam