I think I've tried Ventoy before, actually. I didn't know it did persistent installs.
Unfortunately, I couldn't figure out how to enable my PC to boot from a USB device. It uses the most recent version of the MyAsus UEFI, the one that looks like this picture I pulled from online (minus the red outline, obviously):
You don't happen to know how to enable booting from a device from there, do you? All the guides I found online were for an older version of the Asus UEFI settings.