Based on those who weighed in above, I think this is what we have (in order as they approach) so far:
.... with Harry Dee standing on the inside up near the front, checking out the way they are lined up from trackside.
Here's a close up the brown and white coupe, and the blue car (behind the #J73) that we're not sure of:
Suggestions/Corrections to above list welcome!
Thanks "Sparky" for providing this really great image.