Let's just make this the official "soundalike" thread.
I used some of my Christmas gift card credit to get Blackjack's Anthology, which collects both of their "ain't nobody even heard of 'em, much less heard 'em" albums. It was a sort of supergroup of future stars, fronted by Michael Bolton (using his birth name) and Bruce Kulick. (If you're wondering, the first album has a very rough, demo-ish sound, even though it was put out by a major label and produced by Tom Dowd, but the second turned out to be quite good, a sort of "early 80s Whitesnake meets mid-80s KISS.")
There's a song on the second album called "Airwaves," which, unfortunately I cannot find online in a form that I can embed or link to here. (Jack Sparrow could probably get it pretty easily, though.) Other than Bolton's voice, it could almost be some forgotten Queen b-side.
Which is where it gets really weird. It pre-dates "Radio Ga Ga" by four years, but is also about the radio (though in a different manner than the nostalgia of "Radio Ga Ga"), has a couple of keyboard flourishes (unusual in a Blackjack track) that sound similar, and a harmony on the chorus (also unusual for Blackjack) that sounds almost exactly like the "radio, what's new?" part of the "Radio Ga Ga" chorus.
I'm not about to accuse Queen (or Roger Taylor, who wrote "Radio Ga Ga") of ripping off some obscure rock band. They don't need to rip off anyone because they're musical gods in every sense of the word. (Until Freddie died, that is.) At least not consciously. But Blackjack tended to steer toward the same sort of sound that Roger's solo stuff gravitates toward (that nebulous "a little hard for mainstream rock, definitely not metal, and with production that easily identifies it as being from the very early 80s" sound), and it was produced by a dude from Yes, that I can't help but wonder if Roger had heard it and had it stuck in the back of his mind a few years later.
Just a few elements, but definitely noticeable.
*--For behavior unbecoming anyone, perpetrated in real time over an extended--AH, FUCK IT! MORE MALIBU, BITCHES!!