You do not belong to any of the other groups, but are interested in me.
You are a media representative who e.g. wants to report on me.
You are a student who is interested in the project and e.g. wants to be part of it.
You are a scientist who is e.g. interested in collaboration.
You are a decision-maker from the industry who is e.g. interested in how I can be used to increase attention for your company or product.