I have seen the entire fortnight 4 lists and you'll never guess who is in one of the annums.
Here is a clue:
An Ohio-based pop and soft-rock band rises to national prominence in the early 1970s with a clean-cut image and a sound tailored to AM radio. Known for polished harmonies, bright arrangements, and teen-friendly appeal, they became regulars on TV variety shows and teen-magazine circuits. Although their mainstream success was relatively brief as musical tastes shifted later in the decade, the band remains remembered for its role in defining a slice of early-’70s pop culture and for contributing several enduring radio staples of the era.
Just by seeing the words "polished" and "bright" and "enduring" and "teen-friendly" gives it all away.
It's us! Although it would have been more accurate if the summary included "sharp-dressed".

Remember, you didn't hear it from me.
Coming Monday
2525 Fortnight 4
Here on the Spandex Bored
And nowhere else