Will anyone actually see your pc wallpaper? The only pape of mine people see usually is my phone pape, and it's just a pape from a video game I like. They ask about it and I explain "Oh it's just from (video game)" and they are like "Huh neat, never heard of it" and that's it.
You're overthinking it anon.
In the end, a safe option is always a landscape or detailed art paper. Use whatever paper you like most, and who cares what people think of it. It's your device and in the end, it's just a wallpaper.