Incredibly? You're describing 2023 JP Sears (90 ERA+), Kyle Gibson (87), and stretching slightly, Patrick Corbin (83), Giolito (91), Miles Mikolas (91), Cristian Javier (92).
Each of these guys started at least 31 games. They range from bWAR of 0.3 (Corbin) to 2.5 (Sears), and fWAR of 0.6...