Another neat "pick an OS to boot into" tool I discovered recently is Ventoy [1]. You install the bootable menu on your USB drive, and then you just drop ISOs or IMGs on there to add choices. [1] https://ventoy.net/en/index.html
Not bad, but with questionable choices making it not usable on a dedicated hard-drive partition: https://github.com/ventoy/Ventoy/issues/1342
It seems like the person that suggested it can't compile ventoy as it requires a particular version of fedora.
This needs somebody to compile ventoy and make a PR.
Tabgentially it seems like the solving the issue where it needs an old version of fedora would make it easier for others to participate.
The best way of moving this forward would be to free up a block of time and either work on a PR, or if not that a PR to make ventoy compilable on more distros.