I would definitely recommend trying Ventoy if you haven’t. Instead of flashing one image on your USB stick, it creates a small bootable EFI partition and a storage partition. You can then drop .iso images on the storage partition, and when booting Ventoy from the stick, it scans the isos and shows a simple interface to select which one you want to boot.

This means you can keep multiple installation media and/or tools on the same stick, with management being as simple as adding/removing files, while also being able to use it as storage in a pinch.