Questions, questions and more questions (READ THE OP FOR ANSWERS)

[Nanaya]

But I think Golden Eyes of vampires are likely the same regardless of who uses them. Otherwise they would be a different rank. Arc has Rainbow Eyes only in her Princess form.

I think Kiri would be right. Doesn't Arcs explanation on Mystic Eyes make it seem like there are degrees based on the individuals power or talent?

[Dartz]

I think Kiri would be right. Doesn't Arcs explanation on Mystic Eyes make it seem like there are degrees based on the individuals power or talent?

The scene on the hotel? She does say that, but I'm not sure if that suggests there is a gradient in the power of each eye color rank based on individual talent, or if it's because different eyes have different power attached to them as per classifications, since she wrote Ruby and Jade below Golden in the whiteboard.
But she does mention it's rare for DA to have ME that can take complete control of someone's brain, and Vlov clearly doesn't have golden eyes. It's hard to say since we've never seen a different golden ME user. Rita/Noel's eyes seem to be a special classification.