yup I have a guild on stormscale horde, im not that active atm as im working a lot irl and had no time to get on, but theres usually a couple online. 'Serming' is one that comes to mind
Zeh Germanz is good for horde on Stormscale. Ante Amanthe Argent Dawn for Alliance. Idk about Remique's guild on Stormscale, it has some toxicity problems. One of my friends got a rather nasty whisper - unprovoked - from one of its members quite recently:
P.s. please make an Alliance (bonus points for Alliance healer) )
even if you're not finding a guild, don't be discouraged from playing 70. There are definitely players who queues BGS every evening. Just hang in with them and fight together against the Horde/Alliance