@Scoots - I'm just a nobody on the internet, but my suggestion would be to encourage Nolan to consider a group home. If that isn't an option, there could be respite care options, which is temporary care for Nolan that give his parents and brother a break. I'm not sure what government or private services are available where Nolan lives or what Nolan or Nolan's family are interested in.
The advantage of a group home, for Nolan, is that he would be around people who are similar to him in terms of behaviour and ability (he might be able to make some friends), the staff there have training and experience dealing with people with difficult behaviours, and there are less expectations placed upon Nolan and staff will be able to help Nolan do things he can't do properly. Being in a group home doesn't preclude him from being in the sort of disability job that his father wants him to get, either. Overall, it definitely sounds like Nolan would benefit from this, (it sounds like the rest of the family would too).
Respite care is shorter term stuff, but can be a lot easier to arrange. There will be someone trained taking care of Nolan from anywhere like an afternoon or evening, to a few days, maybe longer. Not sure of the specific limits in Ohio. This allows the family to do their own thing and have a break from Nolan without worrying about Nolan's safety and welfare. Again, not sure what services are available in his area though, but no doubt this is something his family could look into if a group care home is not an option or will take a long time to set up and they want that shorter-term break. There might be free or subsidized government services for respite care too.