By support, do you mean healer?
Maybe have a look at the WoW Classic New Guild Listings forum to get a sense for what people are recruiting for.
On Skyfury, Archaic has a vibrant and pretty large community with 5 raiding groups at various times. While we are still accepting applications, I think we require people to be at at least level 30 at the moment.
Check us out if interested (Skyfury currently has around 3 hour queues during peak login):