Below is a helpful way of seeing what every recording format has to offer. This will allow you to pick the resolution and crop factor that is best for you.
Full Sensor Overview
Crop Factor Breakdown
The full sensor overview can be a bit confusing to decipher, so below is a breakdown of each individual resolution crop in respect to open gate.
*6K and 1920x1080 have the same crop factor and aspect ratio
*C6K and 2.8K also have the same crop factor and aspect ratio