Teen-pop? You mean along the lines of "Johnny Angel", "Donna", "Da Do Ron Ron", "Surfer Girl", etc?
Not so much in the Lennon/McCartney catalog... "This Boy", definitely (and worstly), and some others, but I think there's as much "young adult" lyrics, especially from AHDN up to RS...which is not the same as "mature adult", I'm just saying...there's an adultness to "When I Get Home" (not the song of a kid who dreams about getting some, but the song of a man who is used to getting some!), "I'm A Loser", "Things We Said Today" that represents the outlook of the early 20s more than it does 15 or 16 or even 17-18.
As for lyrical sophistication strictly within the realm of "songcraft", I think the ability that Lennon/McCartney had to combine lyrical hooks with melodic ones was as good as anybody's. As cheesy as "I Call Your Name" ultimately may be, the title is the hook, and it's uses at the beginning & end of the lyric, with the in-between telling a predictable but perfectly "acceptable" pop song story of missing a loved one, is worthy of any number of "Ain't She Sweet" type Tin Pan Alley craftsmen. the type who made sure the the title was always in caps when it came up on the sheet music . Not a "great song" by any stretch of the imagination, but an awareness of traditional craft is nevertheless being displayed that is anything but accidental or occasional, and anything but "teenage" in aim.
All of which to say, I grew up in world full of "teen pop", and, "Beatlemania" aside, the pre-RS Lennon/McCartney catalog only sometimes intersects with it, and then only in the sense of just passing through rather than actually living there.