Bootloader USB Not Showing Up in Clover Boot Menu??

Afternoon. I have followed the Catalina tutorial to the letter and reached the below instructions. My Bootloader USB does not show up as an option at this point. Any advice?

STEP 4: Install macOS Catalina
You're almost done! All you need to do is boot from the USB drive and install!
  1. Turn on the computer
  2. Press the hotkey to choose boot device (F12 for Gigabyte motherboards, F8 for ASUS motherboards, F11 for ASrock motherboards)
  3. Choose USB

Author: HackToshNoob