>best case scenario
Grookey - bulky physical grass/fairy
Scorbunny - fast frail physical fire/ground or fire/steel
Sobble - slow but bulky special water/dragon

>worst case scenario
Grookey - just plain grass mixed attacker
Scorbunny - fire/fighting or fire/normal
Sobble - just plain water, not that terrible though

>most likely
Grookey - grass/dark, k
Scorbunny - fire/electric or fire/rock....ehh
Sobble - water, again not terrible