During the early wave of GO->Home transfers, a bug was found that involved Pokémon that were Regional Variants of species that existed in LGPE.
These regional variants, when transferred from GO, had their LGPE moveset instead of their own moveset.
Pokémon HOME has since fixed this bug, and they've also put out a statement saying they will retroactively fix the bugged Pokémon.
Thus, these Pokémon were sent to SWSH and dumped, for archival purposes.
-mons missing from SWSH removed until further notice-