“[T]he phrase ‘[s]uits at common law' refers to suits in which legal rights [are] to be ascertained and determined, in contradistinction to those where equitable rights alone [are] recognized, and equitable remedies [are] administered.” Gunn v. Penske Auto. Grp., Inc., No. 3:17-CV-00757 (AWT), 2020 WL 5362118, at *1 (D. Conn. Sept. 8, 2020) (quoting Chauffeurs, Teamsters & Helpers, Local No. 391 v. Terry, 494 U.S. 558, 564 (1990)).