My bug loadout is usually the scorcher, laser revolver, thermite grenades, and hmg with a supply pack. Scorcher's great against bile spewers, laser revolver is good against up to even brood commanders, HMG can do crowds and with enough time and space do chargers and bile titans or even take out shrieker nests one at a time with heavy ammo expenditure. Thermite grenades are of course also good at heavies. The thing that ties it all together is the supply backpack because it feeds the scorcher and HMG and you can stim spam and throw too many thermite grenades to take out medium or sometimes heavy nests by yourself.
Playing with some randos using comms recently I switched back to the recoiless rifle so they could all bring medium MGs and I can still snapshot bile titans in the head like a boss, goddamn. And it freed up a slot for bringing the napalm barrage. Some bugdivers can be alright and we fucking murdered those level 10 drops.