Networking with other Non-Targets Email Header?

I am from a Non-Target in the Midwest that is not a large state school, but still pretty well known in STEM disciplines. I have been talking with the few alumni that are present in Investment Banking, and they have been very helpful so far. However, I have also networked with people other than alumni that I have a connection with such as the same sport or conference in college, same major or major area etc. I want to expand my network even more with other non-target schools, but I don't know how to phrase my email header to highlight the connection. I have just been using the header 'Undergraduate looking for career advice' and hoping that they open the email and notice that I am from a school that doesn't have much of a presence on Wall Street. Obviously this has had very minimal success. I just wanted to ask if phrasing the header 'Non-Target Student looking for advice' is appropriate to use and if the term "Non-Target" is a universal term and not one just used on Wall Street Oasis. Any other suggestions on how to make my header highlight the connection and hopefully make them want to at least become a little more interested in what I have to say in the rest of my email? i apologize in advance if I'm overthinking this.