why dont you turn the left monitor vertically?
Partly because I work in video games, so at work I benefit from having one landscape monitor for testing the game at a realistic resolution and/or using the tools, almost all of which are always designed for use in landscape orientation.
(I could probably work around all of that, and indeed when I work at home I just suck it up and/or have things stretch across two screens. But the other part is that the monitor stand I have at work is a bit limited, so if I have both monitors in portrait orientation and move them so they're adjacent, they end up too close to me.)
At home I've got 2 x 27" 9:16 monitors, one in front and one to my right (total display width ~68 cm), then my little laptop on the left (~30 cm wide) - and that's about far left or right as I can be bothered to look.
At work I've got 1 x 27" 9:16 monitor in front, and 1 x 27" 16:9 monitor on my left. The left hand side of the desktop feels very, very far away!