It is based on the Club where you first play grade footy, as you say those Clubs are listed under their names at the start of the game

Are there any current SOO who arn't representing the State of their birth?

There have been several over the years.

In the Current squads, Inglis was born in NSW.

Surely though if you were brought up in NSW you'd have no desire to play for Qld?

I know I wouldn't want to play for Lancashire just because I played my first junior game there.

It would depend on what age you moved I guess.
Most young players are just happy to get a Rep spot with any team.

Peter Sterling was born in Qld but moved to NSW at an early age, he probably felt ok playing for the Blues as he spent much of his life brought through the NSW rep teams.

British SOO:- You play for the area you start your professional career, to make it tasty have Yorkshire against the rest, Lets face it everybody hates us Yorkies & we think that there are only two types of human! Yorkies & those who wish they were.

edited for accuracy

I was actually born in Singapore, to Wigan parents and then brought up in Wigan. If it goes off where you're born my local pro RL team is North Queensland Cowboys and I would have to play for Papua New Guinea!

Lancs:

Tomkins
Charnley
Goulding
Watkins
Riley
Briers
Lomax
Mossop
Roby
Morley
Hock
Hansen/Tickle (Depends if Hansen would be eligible)
O'Loughlin

Hill
LMS
Farrell
Tickle/Patrick

Yorks:

Eden
Briscoe
Cudjoe
Atkins
Hall
Pryce
Brough
Crabtree
McIlorum
Peacock
Westwood
Ablett
Wilkin

Clark/Robinson
Carvell
Bailey
Kirmond

I like the idea of the Saxons/Celts thing.
Only issue I have is that I'm pretty sure the majority of English SL players could qualify for both teams kind of cancelling out the rivalry.

you would think that this simple idea would have been implemented already.

It is so obvious it is untrue.

So obviously dreadful, yes.

TBH i think you talk our your ar$e for nothing other than effect.

you are one boring, boring man