Question about SGC Pop report...

[tlwise12]

I was recently looking at the SGC Pop reports for the 1923-24 Billikens and noticed something funny...Most of the players of that set I readily recognize BUT there are cards listed for Dave Brown, Jose Lopez, Julian Teran, Pablo Mesa, and Bill Holland...

Am I just missing something or what?

Could this be someone listing cards from the other sets (TG, Aguilitas, and Segundas) as Billikens?

Any info would be greatly appreciated!

Thanks
Travis