Samsung'sline features an Infinity O-display with a cutout for the front-facing camera in the upper-right corner, as opposed to a notch. The size of the recess depends on the phone, with the S10E and S10 each having a hole cut-out, while the S10 Plus has a pill-shaped cutout for the cameras with two front panels.
The standard wallpapers that Samsung uses on its latest phones are all trying to hide the cutout by dimming the top corner. Samsung.
Instead of hiding the clipping, users begin to hug it and use it as a prop in custom wallpapers. Here's one of the first wallpapers I designed specifically for the clipping:
If that's not fun, I do not know what's up.
Reddit has a submarine exclusively dedicated to S10 wallpapers created by other users. Visit this page to browse through the various user-generated wallpapers, or request one that you would like if your Photoshop skills are lacking. Once you've found one you like, save the image on your phone and set it as wallpaper. Make sure you disable the "Motion effect" option otherwise it will not be aligned properly.
In addition, Samsung has adopted the trend for the cut-out background image by creating its own storefront in the Galaxy Store app. When you open the Galaxy Store app, the first category should be "Slicing Wallpapers for the S10." If this is not the case, you can go to My Galaxy > Themes and find the wallpapers section there. Currently all wallpapers in this area cost a small fee.