Images load at the top for mobile because they are positioned on the left.
Cropped images tend to look professional when placed next to one another so long as the content is busy enough.
Each image must be clicked to expand, meaning there is a whole lot more clicking for this style which a visitor may not want to do. The cropped images at least give an incentive to click, unlike the full icon grid style.
There’s a limited amount of writing space over here because the gallery might not be that tall.