Light side ships

tl;dr 2 of the top 4 fleets are LS

Malevolence isn't anywhere close to being the 3rd best fleet. 

Leviathan is the best all around (beats everything with high win rates, requires a powerful fleet to counter it on def).

Executor is 2nd best (equal with Profundity without P1, P1 clearly pushes it into 2nd place), also the easiest to acquire among the GL fleets. 

Profundity is 3rd best. It's still a powerful fleet, but it lost a lot of ground since the arrival of P1. It's inferior to Executor. Can beat Leviathan if you use Mk6 with it (this requires some favorable RNG and for Lev to not call Scimitar to assist because the strategy is an edge-of-the-knife ult race).

GR with Marauder (Nego or Endurance based on what you're facing) is a great offensive tool. Can beat P1 Executor. 

Things become less clear now, it's kind of more of a rock-paper-scissors situation between some of the remaining fleets.