I think Resolve measured version 4 of the HE560, which could be tuned a bit differently (esp. in the treble?) than version 2. I’m basing this on some older graphs of the HE560 by Oratory1990 and Inner Fidelity.
You could try requesting some EQ info here or in the above HE560 topic…
…but it doesn’t appear that Headphones.com currently has any measurements for V2.
All of the graphs of the HE560 look a bit depressed in the upper mids though around 2 kHz, which is fairly common on HiFiMan planars. And they do not have much of a boost in the sub-bass, even though they extend well into the lower frequencies. So those might be two possible areas to consider targeting with some EQ.
Treble response does not look consistent between different versions, so it’s hard to know what to advise there. The older models appear less bright than the V4 though.