Technically, Host = Super admin.
Really technically, there is no real thing as a host... "Host" checks involve seeing if the server is run on the same place as the client, if you get what I mean...
To make yourself a "host" in terms of the IGSO, go into a single player server, and use /hostblid #### and then it should recognise that you are the server host.
If you want to stop your servers from auto-admining you, open prefs.cs file in:
%Blockland%\base\config\server\prefs.cs
Look for the line that's named $Pref::Server::AutoAdminServerOwner, and change it's value to 0 or false.
This was a thing that was thrown into v8, that was designed to make Dedicated server owners get super admin automatically. However, it also takes effect in "normal" servers. But technically, in a normal server, you are super admin anyway to start with, and auto-key-based adminizer doesn't effect your status.
Just so you know, it is a key-based system, so if you ran a server on your key, and then logged into that server with the same key, you get Super admin automatically. (Remember, you can run an infinite amount of dedicated servers from the same key, you just can't log into them at the same time, lol)