Thank the Lord for 90's jerseys
The ones on top left and right are direct copies of Wigan jerseys from a similar ear.
Not sure why St George copied the Wigan designs but seeing they had similar colours and Wigan being a dominate force in the game over there might have something to do with it.
Also, are you 100% sure that the 1993 CS jersey is made by Ellgren? It looks very different to the Wigan one and looks to be made of the cotton/poly mix rather than just polyester. I've never seen any jerseys over here made by Ellgren or any clubs with jerseys sponsored or made by them.