Just an example that the usuall troop combinations are good but for special tasks they can be mixd up up and very effective. Here is GoWiWiLoon:
Attacker TH9: 12 Level 6 Balloon, 2 Level 4 Golem, 1 Level 5 Golem, 2 Level 2 Witch, 19 Level 5 Wizard, Level 14 Archer Queen, Level 10 Barbarian King, 2 Level 6 Healing Spell, 1 Level 2 Jump Spell, 1 Level 5 Rage Spell
Defender TH9: Level 13 Archer Queen, Level 10 Barbarian King, Rank 41/45