Sometimes I think I'm the only person on the planet that grew up knowing it as "Rock Scissors Paper".

I still defend that as the best name in English. Rock needs to go first. Rock beats Scissors beats Paper. It's the most straightforward order.

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.

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

Rock loses to Paper loses to Scissors

I grew up calling it "Paper Scissors Rock"!

in german it’s

“Schere Stein Papier”