>>106510846 (OP)
As someone who basically lived on 4stats, these boards are dying from most dead to least:
/biz/ Business & Finance
/mlp/ My Little Pony
/fit/ Fitness
/b/ Random
/co/ Comics & Cartoons
/tg/ Traditional Games
/mu/ Music
/j/ Otaku Culture
/r9k/ Robot 9001
/tv/ Television
/v/ Video Games
/vt/ Virtual YouTubers
/sp/ Sports
/a/ Anime & Manga
/pw/ Professional Wrestling
/pol/ Politically Incorrect
These ones are steady:
/cm/ Cute/Male
/e/ Ecchi
/g/ Technology
/ic/ Artwork/Critique
/int/ International
/lgbt/ Lesbian, Gay, Bisexual, & Transgender
/t/ Torrents
/vip/ Very Important Posts (4chan pass board)
/vst/ Video Games/Strategy
These ones are actually growing:
/adv/ Advice
/bant/ International/Random
/h/ Hentai
/trash/ Off-Topic
/vg/ Video Game Generals
/vm/ Video Games/Multiplayer
/vmg/ Video Games/Mobile
Make of that what you will.