I think you need to ask in the Lore Group if Hircine had any interaction with the redguards in the past. I haven't read of any though. I guess dunmer would be an alternative with Solstheim being inhabited by them for quite some time now. Another race could be bosmer with their wild hunt, but i don't know much about it. Plus, as a bosmer i think alchemy is off the table ( not sure if you can replicate all the diseases without plants ) and i've read that they tend to craft weapons from the bone left-overs of their prey ( Ring of Namira here ).
I think you need to ask in the Lore Group if Hircine had any interaction with the redguards in the past. I haven't read of any though. I guess dunmer would be an alternative with Solstheim being inhabited by them for quite some time now. Another race could be bosmer with their wild hunt, but i don't know much about it. Plus, as a bosmer i think alchemy is off the table ( not sure if you can replicate all the diseases without plants ) and i've read that they tend to craft weapons from the bone left-overs of their prey ( Ring of Namira here ).