That's a research-worthy question...
One assumption... So many manufacturers in the HO market have made offset 2-bay hoppers for Santa Fe, that it would be reasonable to assume the 1:1 did, indeed, have these in their roster.
More succinctly, however, I went to the Santa Fe Historical Society website, perused their rolling stock info, found a drawing for a GA-72 2-bay offset hopper. There were 167 of those on the active roster of June 1970.
Santa Fe had several dozen GA classes of open-top hoppers. No time to research them all. Hope this answers, in part, your question.
OTOH, I wouldn't get too fussy about class numbers vs. car numbers......lots of 'license' taken here....even in the HO realm.
Just MHO, of course...
KD