Since the creation of the CFP rankings, the lowest seeded one-loss team is 7th. There have been some 3-loss teams in Top-12, but rarely more than 2. None of them outranked any 1-loss team. Skipping 2020 because most teams didn't play any sort of schedule
3 Loss Teams finishing Top 12 since 2014 (Total of 18, average of 2 per year)
2023 - none
2022 - Utah and Kansas State
2021 - Utah
2019 - Wisconsin, Auburn
2018- Washington, Florida, LSU, Penn State
2017- Auburn
2016 - Wisconsin, USC, Colorado, FSU, Oklahoma St
2015 - Ole Miss
2014 - Arizona, GT
Lowest Ranked 1-loss teams since 2014
2023 - 7th
2022 - 4th
2021 - 5th (ND)
2019 - 4th
2018 - 6th
2017 - 6th
2016 - 4th
2015 - 7th
2014 - 6th