In an effort to remove the "ghost" SIM, I tried to go to the reset menu and erase eSIMs. This did nothing. Then, I tried to go to the reset menu and "reset mobile network settings". In this, I can see a drop down, one with "Google Fi" and another with my phone number. I tried to reset them both, and it still didn't fix the extra network. I'm so confused as to how this is even possible, it seems like an Android or GOS bug. I really hope I don't have to reset my entire phone to get rid of the extra SIM.
The only difference in "About Phone" is the IEMI and that one of the SIMs says "Disconnected". I assume this is the busted one, but I have no way to remove it at this point.