V1 always equaling Vr ... a split between the two speeds?
Depends on the aircraft (ASDR performance, stall schedules, etc) and how the AFM sums have been presented by the OEM (balanced/unbalanced, etc.)
Usual points to consider -
(a) V2 drives VR ... in that VR will be associated with the time delay (and associated speed increase) taken during the rotation to end up with V2 at screen. V2 generally is stall driven.
(b) V1 schedules will depend on how much detail the OEM chooses to put in the AFM and the ASDR characteristics of the aircraft.
That's probably not terribly helpful but, without a specific AFM to speak to, there is not much more we can do but generalise and waffle around the topic.