ISOs in Ventoy partition not visible

[garta34]

I just discovered that I misspoke above: my Ventoy stick is currently formatted FAT32 and the various ISO-files on the stick are recognized by multiple computers. However, I had originally formatted it exFAT and discovered that all computers I tried the stick on did /not/ recognize that there were any ISO-files on the stick, regardless of the size of the individual ISO-files.

So, my question should be: do computer BIOSes not natively recognize exFAT and I somehow need to "activate" an exFAT driver on the USB stick?