Not sure why you’re being downvoted, it’s true. If you want to display items (normally images) with different dimensions, while respecting their natural height/width ratios, you really have 2 options:

1) Fixed height rows: lower information density (excess white space around some of the items), but easier to scan systematically

2) Masonry layout: higher information density (no excess white space around items), but harder to scan systematically

Nobody is “right” here, it’s simply user-by-user preferences about what you prefer.