Of the last 30 people to raid me, not one used 3 troops. Most used only a single troop type. Mostly knights OR archers, occassionaly paladins. Pal choice varied. Most only used one range spell. Some no range spell and only knights plus no Pal that does range damage. Not clear to me how this strategy manages to destroy towers that are only damage by range attacks.
What’s going on, some kind of exploit? Raiding with a single troop used to be rare.