just in case you dont know, Distrosea lets you try various distros online which is handy just for getting a quick idea what the UI is like
for trying out different distros using the live USB method, Ventoy is a good option since it lets you have multiple ISO files on your USB drive at once, instead of having to reformat your USB each time
can anyone comment on how the files are actually stored? is everything imported into a database or can it just work with any sort of folder structure you have already?