1.) Bonnie Anne 2.) El Toro 3.) Hawkules OR Old Scratch
For me at least, these combos work perfectly in pvp or pve. the combination of bonnie's range+burst fire is great, and el toro/hawkules' excellent damage and relentless makes them excellent in battle, and scratch's AoE is invaluable. As a Swash, its great to have them confront the opponent head on while i go round the side and get them there.