Games like Tom Clancy's Rainbow Six 3: Black Arrow

If you finished Tom Clancy's Rainbow Six 3: Black Arrow, the closest matches are Call of Duty: Modern Warfare, Call of Duty: Black Ops 4, Call of Duty: Mobile, MechWarrior 5: Mercenaries and Day of Infamy. All 8 share its shooter genre and are ranked by how closely their themes and modes overlap.