I have seen this popular anti-2 star legend league base very often in raids and quite often in CWL. There are a few approaches to this base, but I think the safest way is via PEKKA, Bowlers, Witches, and Healers.
The first approach is from XMaha Gaming with QW + PEKKABoWitch:
He queen walks from 3 o’clock and funnels with an electro dragon at the bottom to make sure the queen goes towards the town hall. As she goes up, the Barbarian King funnels at 12 o’clock with some witches and then the main group of PEKKA and bowlers follows the wall wrecker in. I don’t think you need to have the Grand Warden walk with the queen…especially if you’re worried about target switching from the healers.
The second approach is CarbonFin’s Lavaloon. Definitely a riskier approach since it takes more execution, but still a viable alternative: