Teams Left Alive
All undefeated teams either Independent or from the Power 5 Conferences. They stand atop their conferences meaning if they win their championship they would have a place. NC State is probably the most unlikely team left but because they haven't been tested much, it's hard to tell. Arizona State and TCU are next and will probably fall out completely with a loss. BYU obviously would be totally out with a loss and are still straddling the line between this column and the Outside Chance column.
Florida State
NC State
Baylor
Oklahoma
TCU
Penn State
Nebraska
BYU
Notre Dame
Oregon
Arizona State
UCLA
Ole Miss
Auburn
Texas A&M
Miss State
Alabama
Teams with an Outside Chance
Marshall and Cincinnatti are the only teams left undefeated and not from a Power 5. Some of these teams are still undefeated but sit in the lower rungs of their conference and would need to win out and win their championship to have any hope. Duke Georgia Tech from the ACC would still have to hope that there would be some 1-loss conference champions. The same goes for Arizona, Utah, Washington and Oregon State, all undefeated from the Pac-12. They would really need to look good and hope for some help from 1-loss conference champions. The rest of these teams are the 1-loss power teams from the Power 5 that could win the rest of their schedule and conference then hope for a shake at the top. A few of these teams are just barely holding on here by a string, like USC, South Carolina, Florida, Kansas State
and the Big 10 teams (Ohio State and Michigan State), all 1 loss teams that would need a lot of help.
Cincinnati
Georgia Tech
Duke
Ohio State
Michigan State
Marshall
Washington
Oregon State
Stanford
Utah
Arizona
USC
South Carolina
Georgia
LSU
Florida
Kansas State