The top 4 boards without exception.
/pol/ for its cancerous redpilled haircuts and happenings drawing in copious newfags, plus endless, unquestioning trumpwank.
/b/ for being endless porn dump threads, e-begging, and piss-poor social media humor with a legendary status that draws in newfags.
/v/ for being a contrarian hellhole with /pol/-lite memes.
/vg/ for infighting and wars between generals.
Honorable mentions include the cancer blue boards of /tv/, /sp/, /co/, and /int/, who have no remaining board culture and just use general "memeculture" as a surrogate, and /r9k/ and /lgbt/ for being a swamp of whiny trannies and homosexuals, /r9k/ just having a tinge of /pol/