Learnt by Level Up

These Pokémon learn Flatter at the level specified

Name ⇧⇩	Level ⇧⇩	Type ⇧⇩
Nidoran F	38	poison
Nidorina	43	poison
Nidoqueen	1	poison ground
Nidoran M	38	poison
Nidorino	43	poison
Nidoking	1	poison ground
Illumise	29	bug
Buneary	44	normal
Lopunny	44	normal
Croagunk	45	poison fighting
Toxicroak	54	poison fighting
Mesprit	56	psychic
Gothita	28	psychic
Gothorita	28	psychic
Gothitelle	28	psychic
Vullaby	19	dark flying
Mandibuzz	19	dark flying
Oricorio Baile	33	fire flying
Tapu Lele	53	psychic fairy
Impidimp	8	dark fairy
Morgrem	1	dark fairy
Grimmsnarl	1	dark fairy
Morpeko Full Belly	20	electric dark
Enamorus Incarnate	10	fairy flying
Shroodle	18	poison normal
Grafaiai	18	poison normal
Tinkatink	43	fairy steel
Tinkatuff	43	fairy steel
Tinkaton	43	fairy steel
Oricorio Pom Pom	33	electric flying
Oricorio Pau	33	psychic flying
Oricorio Sensu	33	ghost flying
Morpeko Hangry	20	electric dark
Enamorus Therian	10	fairy flying

Learnt through Breeding (Egg Moves)

These Pokémon learn Flatter through Breeding (Egg Moves) at the level specified

Name ⇧⇩	Level ⇧⇩	Type ⇧⇩
Drowzee	0	psychic
Totodile	0	water
Mareep	0	electric
Murkrow	0	dark flying
Sableye	0	dark ghost
Pachirisu	0	electric
Woobat	0	psychic flying
Inkay	0	dark psychic
Squawkabilly	0	normal flying
Sableye Mega	0	dark ghost
Meowth Alola	0	dark
Squawkabilly Blue Plumage	0	normal flying
Squawkabilly Yellow Plumage	0	normal flying
Squawkabilly White Plumage	0	normal flying