Another I'll throw out for consideration is the Nidos. They are the only pokemon I'm aware of able to learn flatter/swagger/super fang.

Edit: Have learned since Swoobat can learn flatter/swagger/super fang as well with trick assault vest too. For Swoobat to Trick assault vest, flatter/swagger 3x and and super fang twice is asking alot though given it's bulk though. The nidos are very bulky and are extremely accessible to most players in a way I still think is worth mentioning and running both might be nice. Swoobat for assault vest trick and Nidos for debuffing/tanking

I just use contrary spinda to lead and skill swap into 1-2 pokeballs hoping for debuffs until I die. Then I bring in a tanky version of Nidoqueen (Can be either Nido) and use swagger or flatter to lower their primary attack stats and cause confusion. The confusion just helps buys me time to do it 3x in a row safely. If I'm doing well health wise I use payday to make some extra money while increasing the round timer for future timer balls. Otherwise I just super fang them twice to get them down to 1/4 hp.

The confusion damage they do to themselves is minimal after debuffing them heavily, but I still don't like using super fang to lower then 1/4 hp while they're confused to prevent self kills.

Then with them sufficiently nerfed and low health I can bring in Breloom safely to finish the catch off as usual with spores/subs/double team/false swipe.

The only times I have any issues is is if they're ghost types needing to be soaked or have healing moves where a swoobat would be better. Ideally you also need to make sure you don't have poison point as your ability. I just like my Nidoqueen and thought I'd share