Person from your field of choice:

A person who works in the industry of your choice of work is the most important one in your network as he or she may know the very industry updates about the scope for your job in the industry, the hiring status for that job etc. So, if you keep the contact with these people it is very helpful for you to get the updates from them and now about the future scope of the field.

The Innovator:

This person is someone who is outside from your chosen industry. But he is the one who has the entire latest buzz. And he is the person who is capable of giving you all the updates on the topics which you find interesting. The main purpose to have this person as a network because, he can help you look for those connections that spark modernism via the unusual, as it will help you keep your conversations interesting.