Is the SPL (McGlinchey) at level of Championship? Outside Rangers/Celtic I'd say no, nada.
Anyway Weemac had only one game for Celtic (as a sub) plus 8 games in the SPL for Motherwell (only started one), you could hardly say he was a SPL player.
Paston (2003-2004) only had one season in The Championship, with Bradford who were relegated and either in administration or about to be.
Bertos played 12 games for Barnsley and from what I can see were all in League One. Most of his matches in UK were at Rochdale (82 games), and in League Two.
Trainspotting completed!
Splitting hairs maybe, but I'd say AWs back in 2012 had about 7 players of Championship level or above.