The metrics used are ESPN SoR, BPI, KPI, KenPom, Sagarin, and NET. More info:
From the NCAA’s website:
Starting with the 2017-18 season, the team sheets took on a new look. They now not only include each team’s NET, but also include a team’s ranking in five other metrics: the ESPN strength of record and BPI rankings, as well as the KPI, KenPom and Sagarin rankings. In addition, a team’s schedule and results are now broken down in four quadrants that place greater emphasis on games played on neutral courts and in true road environments.