sudomod

The current image that's linked doesn't have the wpa file in it, is there another one that does? Or at least another way to connect it to my internet without a usb keyboard? How did yalls deal with this?

I just checked the latest image, it is definitely there. If you turned on the Pi with the SD card in it then RetroPie will move that file to a different location, my guess is that's what happened here; you are supposed to modify that file before putting it in the Pi at all. The blog post here has an empty one you can use and the video walks you through the whole process: https://sudomod.com/mintypi-updates/