Swarm according to type distribution

Electric:

1. Joltik
2. Galvantula

Fire:

1. Larvesta
2. Volcarona

Fighting:

1. Heracross

Poison:

1. Beedrill
2. Spinarak
3. Ariados
4. Venipede
5. Whirlipede
6. Scolipede

Steel:

1. Scizor
2. Escavalier
3. Durant

Grass:

1. Sewaddle
2. Leavanny

Flying:

1. Scyther
2. Ledyba
3. Ledian
4. Beautifly
5. Mothim

Bug:

1. Beedrill
2. Scyther
3. Ledyba
4. Ledian
5. Spinarak
6. Ariados
7. Scizor
8. Heracross
9. Beautifly
10. Volbeat
11. Kricketune
12. Mothim
13. Sewaddle
14. Leavanny  
15. Venipede
16. Whirlipede
17. Scolipede
18. Karrablast
19. Escavalier
20. Durant
21. Grubbin
22. Joltik  
23. Galvantula
24. Larvesta
25. Volcarona
26. Blipbug
27. Dottler
28. Orbeetle

Psychic:

1. Dottler
2. Orbeetle

Edit (01.01.2020): Added Sword and Shield additions.