Small nit: the suit in TFA is from the DOJ, not the FTC.
The FTC shares jurisdiction over federal civil antitrust enforcement with the Department of Justice Antitrust Division. In some consumer protection matters, the FTC appears with, or supports, the U.S. Department of Justice.
Biden's FTC appointments are redefining FTC perspective on anti-trust, and DOJ is following suit.
The lead plaintiff attorney is Jonathan Kanter, his bio has his collaboration and alignment with Khan mentioned twice. https://en.wikipedia.org/wiki/Jonathan_Kanter