None of the chiseled purpur variants are unobtainable since the minecraft:purpur_block does not chisel into the chisel variants, only the default minecraft stair, slab, and pillar.

Fabric Loader 0.14.22

architectury-6.5.85-fabric
chisel-1.4.7+1.19.2
cloth-config-8.3.103-fabric
fabric-api-0.76.1+1.19.2
RoughlyEnoughItems-9.1.643

whoops this went under the radar

I just came across this, this is still an issue, bump