So far , I have found Moria sets available at 21st Hall, Ost Dunhoth Sets at Harndirion Skirm Camp, I have not found the Erebor Sets which are advertised in the Wiki.
I didn't look for Draigoch set or Ox-clan set. There are a couple more sets in Wiki I didn't search for.
I have found the Hytbold Sets, but sadly they are not 'bound to account on acquire' as all other class sets, instead they are 'bind on acquire' so it appears your main, who did the grind and finished Hytbold will not be able to get these ones for you. I for one will not be grinding for over a month to acquire this set.
There is OK crafted armour available at level 90 and I think this the only viable option until 100
If anyone discovers other options, please post.
Addit. re Hytbold Armour... the NPC's are just before the stable on the inbound route. However, despite the devs designing a recognisable Beorning Icon, they have put Captain Icons over the heads of these vendors. ("sloppy and unprofessional work" I say!)