>>96765527
Originally pre WHFB they were "The Broo" a generic animal headed raper enemy type like Fimir, then in WHFB they became generic undivided jobbers for warriors of chaos. Then in 6th edition all the way in 2003 they finally got their own book Beastmen of Chaos.
This was a very folk horror leaning book. The first page is a poem/song written in ye olde english about a foolish boy riding his pony into the woods after a bretonnian knight and finding the gor standing over his corpse and it ends badly for him as a warning for kids. Overall its a lot more lovecraft vibed. By that i mean actual lovecraft not the modern funkoised "cthulupop" lovecraft. Things out in the woods descended from degeneracy of humanity, our gross little family secret left in the wilds to die and never be spoken of but instead they thrived becoming the reason you dont go down to the woods alone.
Then in 7th the game as a whole had a big tonal shift notable from the changes to army book covers. Beastmen lost most of their flavour as folk horror chaos and instead became generic barbarian hordes and it sold so badly they didnt even get an 8th edition book at all. Then in AoS they kept that for the most part and they didn't do much with them.
Now in the Arcane Journal they are back to 6th edition beastmen, the real beastmen ethusiasts would argue, with great fluff like a story about towns in the frozen north being assaulted by nightmares warning them too late krawlmaw was coming to turn whole towns into proto chaos spawn but the army ignores warnings because "beastmen stick to the woods in winter". Right as dark red eyes stare at them out of the thickets around the camp.
Basically if you like stuff like Shadow Over Innsmouth, Dagon, The VVITCH, Penders Fen, The Wicker Man and so on maybe give the Beastmen a look.