Get a stack of decent used Dell D620/D630/D820/D830 laptops and install each version on each one separately.
Or, if you're crafty, just get several SSDs, mount them in sleds, don't put the retention screws in, and use them as swappable drives
in the same laptop. Each with its own full installed OS and the appropriate version RPM. Just remember, this isn't HOT swappable. Only
swap those drives when the PC is turned OFF. Not sleeping or standby, OFF.