Having thought about the rumoured names (and tried to convince myself that this can’t possibly be what the festival has come to) I don’t think there’s enough range there.
The last few years we have had a mix of proper rock, indie, rap and pop - whereas the 6 being talked about today all seem to cater to indie pop/indie rock with the exception of billie eilish being pure pop.
So final prediction:
MCR and Paramore - rock
Foals and Sam Fender - Indie
Kendrick Lamar - Rap
Billie Eilish - pop