Thick Fat according to type distribution

Grass:

1. Mega Venusaur
2. Appletun

Poison:

1. Mega Venusaur

Water:

1. Seel
2. Dewgong
3. Marill
4. Azumarill
5. Spheal
6. Sealeo
7. Walrein

Ice:

1. Dewgong
2. Spheal
3. Sealeo
4. Walrein
5. Swinub
6. Piloswine
7. Mamoswine

Fairy:

1. Marill
2. Azumarill
3. Azurill

Normal:

1. Snorlax
2. Miltank
3. Azurill
4. Purugly
5. Munchlax
6. Alolan Rattata
7. Alolan Raticate

Fighting:

1. Makuhita
2. Piloswine
3. Pignite

Psychic:

1. Spoink
2. Grumpig

Dark:

1. Alolan Rattata
2. Alolan Raticate

Fire:

1. Tepig
2. Pignite

Dragon:

1. Appletun

Edit (01.01.2020): Added Sword and Shield additions.