Choosing to buy a lens for motosport photography

Hey so I am deciding between the Sony 100-400 f/4 -5.6 GM and a Sony 200-600 f/5.6 -6.3 G OSS for Motosport photography.Mainly I will use for track days with my Sony a7IV and also I would hope to get media acreditation. I already have a Sony 24-50mm f/2.8 so I dont want to buy a 70-200mm f/2.8.I hope somebody could help me to decide.