The trick is that some of the best “one-hit wonders” have second songs that charted based on the strength of the first. Like Rick Astley, A-ha, etc. Others are NOT considered one-hit wonders because they’ve had tremendous album success. Technically, Pink Floyd is LARGELY a one-hit wonder in the US.
Ummm, what??? Which song are you thinking of as their ONE HIT?
That’s like “Rush” is a One-Hit Wonder, because “New World Man” was their only Top 40 song.