Nice looking landscapes. Square-ish always seems to me top be a better proportion for composition, even for landscapes. Many folk don't use this in photography though, maybe influenced by the so-called "landscape-format". Go into any gallery and see how many images are longitudinal - eg 3:2 or wider.But I find the 3:2 format better for street photography where it kind-of corresponds with our field of vision (complicated subject though)
The one on the left is square. Stephen Mangan, really good work.