I'm working under a professor as a research assistant. She is preparing a proposal for research she wants to do with unmanned vehicles. A part of this proposal is showing that the past research doesn't focus on large numbers of vehicles, and the ones that do are not as intelligent and use "swarm behavior". Her research will focus on large groups or intelligent vehicles, and wants to show that she is doing something that is rarely researched. She's tasked me with putting together a list of the past research in this field noting the number of vehicles each paper experimented with and whether it was low level swarm behavior or something more intelligent.
As I'm putting together this data, how can I show there's a hole in the current research without citing hundreds and hundreds of papers? Does what I'm doing have a name that I don't know about?