If you call it Rock-Paper-Scissors it still follows logically:

Rock loses to Paper loses to Scissors

Or any other ordering

Yes, but I was specifically choosing the one that is by far the most popular one; at least in American English.

Why would you want to describe it as "loses to" rather than "beats"? People want to win, not lose.

I grew up calling it "Paper Scissors Rock"!

in german it’s

“Schere Stein Papier”

Is there a niche "endian" humor about this :) - e.g. is this the little endian, or big endian, or "middle" endian of "Rock Paper Scissors" - excuse my really poor attempt at this.

That rings a bell, as in I think I had some classmates as a kid who called it that, and I remember thinking they were weird. I'd guess it was maybe 1:3 in favor of RPS over RSP.