Your highest MMR Killer and build with them
In other words who do you dominate survivor with constantly getting 4K'S or even 3K's? Coincidentaly getting streaks also gets you to red rank or rank 1 the fastest so who is it? For me its
Doctor (Chaotic Gens)
Scourge: Hooks gift of pain/Overcharge/Eruption/Oppression
This build is so good that its my permanent Doctor build. I basically go for the 3 gen strat as best as possible and kill survivors lol Its that straight forward!
Also you'll never feel so good about kicking gens outside of Pop ever! )