a pilot, rated or not, that can't tell what type of wing the 737 or any other liner has just by looking at a picture is not a good pilot IMHO.
I can tell you that not all experience Pilot knows every type of aircraft by looking at it sometimes.
A good Pilot is there to fly the type related aircraft in which he is rated not to look at the parking and know every type of aircaft parked!
Is a nonsense, but mslty of the non-pilots but Aviation sympathizer know more about that!
And besides that, so in your opinion, all the CPL guys looking for their first jet experience and sending thousand of Cv to thousand of Companies with Thousand of Aircrafts type first they have to open Wikepidia and memorize all the information about Aircraft types!
I can agree that sometimes , the more you know better is the impression you give to the recruiter but still not fair in my opinion.
Have good night