CapnHector has some excellent builds focusing on a fleet of five capital ships of the same type. Good source of inspiration. Beyond that, I'm usually disinclined to recommend SO Aurora to new players because of how meta it is, but you've already found LP brawler spam on your own, so it's no harm to point it out to you. Automated Ships carrier saturation is another good one.
For a fun one, it has limits with regard to the hardest faction in vanilla, but for everything else in the game, an Odyssey all on its own can take on quite a substantial fleet. In Nexerelin, which gives factions S-modded endgame-level fleets, you can take on a challenge of destroying an entire such armada with one Odyssey.