Its not unusual for early Hope to foul an adaptor, but simply filing a bit off the side of the adaptor sorts it.
When it comes to Hope 5 bolt rotors it is pretty much caliper orientated.
For example. Early caliper like C2 through to mini's, the rotor size needs to be +5mm, so 165,185mm etc fits so youll find that the 165 etc etc are usually 5 bolt, and sizes 160,180mm etc are 6 bolt.
The hard to find rotors are for example 160.180mm etc in 5 bolt pattern, and 165,185mm etc in 6 bolt pattern. So if the caliper you have is modern, you'll need to find a rotor that is 160,180 etc etc but in the 5 bolt pattern.