Hey @borbs,
The big question about Hosting supporting Ghost is whether Hosting supports using NodeJS instances or not, whether the firewall is properly configured for this type of service, caching system, and other details.
Already in the part of the Web Servers (like Nginx, OpenLiteSpeed, Apache and etc) I do not see limitations, because they all accept the local Reverse Proxy that is necessary to connect in the local NodeJS instance.
If you have any questions OpenLiteSpeed has a reverse proxy tutorial at this link Setting up OpenLiteSpeed as a Reverse Proxy – OpenLiteSpeed
Hope that helps :)