Chosen Solution

So I just dropped my phone and the display started malfunctioning until settling to normal with a horizontal line of distortion going through, so I’m probably going to need to change it. With this phone, if I go online and look around for parts, are the glass and digitizer typically sold as a single unit?

Yes, you’ll have to buy the display assembly as one piece (with frame is preferred) as both the glass and the OLED panel are both damaged. Samsung Galaxy S8 Screen Replacement [linked product missing or disabled: IF355-001-1]

Seeing the actual screen that displays your picture is damage you have to replace it all, how most companies do it is they glue the part that displays what’s on your phone (The LCD or OLED screen) and the glass together. So it’s all 1 unit. You can find these replacement screens on iFixit’s store or eBay :)