9 species have Scrappy as a hidden ability, 3 as a normal one

Effect, in PokéAPI's words

“Lets the Pokémon's Normal and Fighting moves hit Ghost Pokémon.”

As a hidden ability

Species	Slot	Note
Taillow	Hidden	Since Generation V
Swellow	Hidden	Since Generation V
Loudred	Hidden	Since Generation V
Exploud	Hidden	Since Generation V
Herdier	Hidden
Stoutland	Hidden
Pancham	Hidden
Pangoro	Hidden
Sirfetch’d	Hidden

As a normal ability

Species	Slot	Note
Kangaskhan	Normal	Since Generation IV
Miltank	Normal
Flamigo	Normal

Elsewhere in PokéAPI

3 more holders without a page here

Alternate forms and other species that PokéAPI lists with Scrappy.

Lopunny Mega, Farfetchd Galar (hidden), Decidueye Hisui (hidden)