>>12010565Water is the strongest. Most diverse, most powerful [esp. with Drizzle; HAHAHHAHAHAHA if Swift Swim], most synergy.
Flying is also really nice due to the variety of types/roles it has. Fighting is mostly Choice Scarfed Close Combats.
>>12013363This presents some nice options, though I wouldn't use Ice, and instead replace it with Bug or Poison.
Grass is pathetically bad, and I say it with it being my favorite type.
>>12010808Poison's a decently strong Monotype, due to mostly gen 1 representatives [Gengar, Tentacruel, Venusaur] and a few others that shine with such type limitations [Drapion, Crobat, etc]. It's not as bad as you make it out to be.