Here are the planes that I found that are (probably) in the promotional screenshot
here it is:
AI Bomber by Jundroo w/ landing gear
AI Bomber by Jundroo w/o landing gear
Notes:
Wasp is the only stock plane in there
Still finding the other planes like the Sukhoi in the bottom right
The promotional screenshot (it is the picture that says 'DOWNLOAD MORE THAN 50,000 PLANES' )can be found in the carousel on the SP homepage
here's another one