A few other exciting endings to games that come to mind:
2001, 2007, 2009 vs Utah
1983, 2011 vs Utah State
2015 vs Boise State
1999 vs Washington
1996 vs Texas A&M
2016 vs Toledo
2022 vs Baylor
2019 vs USC
2016 vs Miss State
1993 vs Hawai'i
1990 vs Washington State
1989 vs Oregon
In terms of other games where a loss seemed almost guaranteed late in the game, 2007 Utah & 2015 Boise State were probably the most similar to the Oklahoma State game.