Mobile01 published their Nikon Z 50mm f/1.8 S lens ($596.95) review and comparison with the Sigma 50mm f/1.4 DG HSM Art lens ($949):
#4: photo wall for testing (away from camera 2m, click for hi-res images):
#7: Extreme border f/1.8, Nikon wins:
#9: photo #7 f/2.8, Nikon wins:
#11: photo #7 f/5.6, nearly identical:
#12: same photo wall for testing but portrait orientation:
#13: Extreme border f/1.8, Nikon wins:
#14: Extreme border f/2, Nikon wins:
The Nikon Z7 was used in this lens test (shooting RAW).
Check Nikon Z 50mm f/1.8 S lens price and availability: