This ignores the non-Season clears present on last era’s leadboards, particularly for WD and DH which both hit 140 or higher. Neither has been nerfed.
Even a 10 tier nerf to the new Sader set puts than at 140+. Wiz can still do the same though–and this must be considered–interest has been diverted to newer builds. In other words, the data presented is not conclusive of anything except current pushes with new/updated builds or attempts made by folk who are not going for true Rank 1 pushes, something we historically don’t see until later in a Season/era.
I can appreciate the work that went into the OP, but the conclusions drawn are misleading.
You’ll want to look at this for more info.