It's hard to find a decent wallpaper for a landscape-portrait-landscape 3 monitor setup, but I think this will do the trick (Software Dev Battlestation) : r/battlestations
How to flip your monitor from landscape to portrait - The Verge
LED Monitor - Support - ViewSonic GLOBAL
Landscape Dual Screen, Dual Monitor Nature HD wallpaper | Pxfuel
Computer Monitor And Wallpaper Of Landscape On Screen, White Background Stock Photo, Picture And Royalty Free Image. Image 92283860.
For portrait and landscape setup: DualMonitor HD phone wallpaper | Pxfuel
Landscape Monitor
Amazon.com: ESR Portable Monitor for Laptop, Slim 15.6 Inch 1080P External Monitor with Adjustable Stand, Travel Monitor, Landscape and Portrait View, Portable Screen for Laptop/Mac/Tablet/Phone/Switch, Silver : Electronics
AG Neovo DW 3401 DW Series 34" WQHD USB C Monitor, Landscape, VESA Mount Compatible
What Is a Vertical Monitor? And Why Would You Need One?
How to Correctly Rotate Your Monitor Vertically | EIZO
Samsung's Enormous, Curved and Rotate-able Multi View 55" Monitor - Core77
The 4 Best Vertical Monitors - Summer 2023: Reviews - RTINGS.com
Best vertical monitors 2023: Displays that go long | PCWorld