I would like to do a web search for different planes that have utilised the "bat wing" paint application noticeable on the wings below? What keywords should I search for?
This particular paint scheme was used in a number of Gee Bee aircraft (in different colors) and is popularly called the 'Gee Bee paint scheme'.
According to the book Gee Bee:
The Gee Bee's paint scheme was inspired by the Coca-Cola paint signs of the 1930s.
This page, where an image similar (same?) as yours is available also calls it the Gee Bee scheme:
Gee Bee paint schemes have been popular on Fly Babies, but have you ever wondered what one would look like with a small radial engine?