the Forsythe Chronicles
Grappling for story devices, Jughead's real name was once Frothingham. Though not much used, It would get codified as Forsythe by 1962 at least.
Given these two stories were published a month apart in 1968, it would seem they came in with some stated premise to establish and reiterate Forsythe as the name, and then also try one silly concept.
Foreshadowing the magical hat pin of a decade later and then another half decade later after that, the mere mention of his name sends the girls in an uncontrollable passion, key difference that Jughead is not into it.
A bit curious too, a flashback in the Little Archie -- though a false flashback, mirrors the manner Mr. Weatherbee convinces Jughead to take his given name in a story a decade later. One other thing to note on the Little Archie -- in that narrative universe, Miss Grundy's name is something other than Geraldine.
The various edicts and attempts by Weatherbee or Grundy to use the formal name of Forsythe all end in defeat.
There is something notable in the teaching staff calling you by your nickname, or nickname of sorts. I think back to seventh grade with this -- mixed feelings with one teacher. It seemed kind of a stilted informal-ness and chumminess a tad unbecoming.