>>55824926I also had an idea for a Royal Type before. Here's how I said I'd do it:
Royal Type
Colour: Gold
Icon: Crown
As a Move's Type:
X2 on Normal, Grass, Steel and Royal.
X0.5 on Ground and Bug.
X0 on nothing.
As a Pokémon's Type:
X0.5 from Grass.
X2 from Poison, Steel, Fairy, Dark, and Royal.
X0 from Normal.
A Royal Type Pokémon using a Royal Type Move goes before other Pokémon in their Priority Bracket.
Retyped Pokémon:
Poison/Royal Nidoqueen
Posison/Royal Nidoking
Dark/Royal Mewoth(Alolan)
Dark/Royal Persian(Alolan)
Water/Royal Kingler
Water/Royal Goldeen
Water/Royal Seaking
Royal Togepi
Royal/Fairy Togetic
Water/Royal Politoed
Water/Royal Slowking
Water/Royal Wailord
Water/Royal Milotic
Water/Royal Prinplup
Water/Royal Empoleon
Bug/Royal Vespiquen
Dark/Royal Weavile
Royal/Fairy Togekiss
Royal/Water Phione
Royal/Water Manaphy
Grass/Royal Serperior
Grass/Royal Petilil
Grass/Royal Lilligant
Water/Royal Frillish
Water/Royal Jellicent
Fairy/Royal Florges
Rock/Royal Tyrunt
Rock/Royal Tyrantrum
Royal/Rock Diancie
Royal/Rock Diancie(Mega)
Gress/Royal Tsareena
Royal/Grass Calyrex
Royal/Ice Calyrex(Ice Rider)
Royal/Ghost Calyrex(Shadow Rider)
Psychic/Royal Espathra
Dark/Royal Kingambit
Retyped Moves:
Attack Order
Defend Order
Heal Order
King's Shield
Instruct