There is no brush like this for applying pearl shadow on the cheekbones.
The highest part of the Sfumato brush is made to meet the surface of the shadow first to collect the most pearl particles. If you apply it on the hairline so that the highest area of the brush touches it, the center of the convex hairline will be sufficiently shiny, and the edges will be smeared with a relatively small amount, making it easier to adjust the amount as if blending was done naturally.