You mean, age-wise or orientation-wise?
I meant the age of the target audience. I've never seen a John Hughes movie, and one reason for it was because I assumed (perhaps incorrectly?) that the target demographic for the audience was YA. But how much younger were the characters than the actors playing them?
Judd Nelson is 58, so not much younger than you. Molly Ringwald is 50.
I don't get your point about the age of the actors. Today is Nick Robinson's (Simon) birthday. He's 23 and played a teenager.
In
Call Me By Your Name, Armie Hammer, age 31, plays 24, and Timothee Chalamet, age 22, plays 17. (I haven't seen the movie, but I'm currently reading the novel, and I'm assuming the ages of the characters in the movie are the same as in the book.)
One might consider that the age differences between the actors and the characters aren't enormous, so I'm just sayin', but the friend who likened
Love, Simon to a John Hughes movie also said he had a problem with
Call Me By Your Name because he couldn't accept Armie Hammer as a 24-year-old graduate student. He felt Hammer was (or came off) too mature for the role. (My own opinion is that in the novel Hammer's character seems more mature and self-aware than might be typical for a 24-year-old, or at least a 24-year-old roughly 30 years ago.)
Judd Nelson was (turned) 27 the year
The Breakfast Club was released; I haven't checked, but I assume he was playing a teenager?
I guess Molly Ringwald is the "outlier." It appears she actually was (turned) 16 when
Sixteen Candles was released.
(I say "was [turned]" because I checked the birth years for Nelson and Ringwald, but not their birth dates.)