Games like Super Smash Bros. Ultimate: Challenger Pack 7

If you finished Super Smash Bros. Ultimate: Challenger Pack 7, the closest matches are 2XKO, Guilty Gear: Strive, SNK vs. Capcom: The Match of the Millennium, Deadbeat Heroes and One Piece: Grand Battle!. All 9 share its fighting genre and are ranked by how closely their themes and modes overlap.