Single post in PokéDex errors

random thing that i have no clue is an actual error, but i figured i should ask anyways, if anything to at least get an answer to my confusion theres quite a few hisui dexes under sinnoh at the very end, is this just a "pokefarm's code is a bit weird" issue? i sorta thought they would be in their base mons reigon, or at least under galar so paldea dosent start with non starter pokemon (wyreer,kleavor,ursaluna (normal),Basculegion,Sneasler,Overqwil, and enamorus are the mons btw) it dosent really bother me that theyre there, its just a bit confusing is all ^v^