I have the same thoughts! Still, while a few of Kyle's brushes work to an extent, none of them quite capture the "6B Pencil" feel in Procreate. I actually took it upon myself to re-create the 6B brush for Photoshop! Here's a link to my brush set on Gumroad:
These brushes are now my go-to sketching tools in photoshop, and I just wanna share them with anyone else who might want them!