HS2 benefits pretty my everyone along it’s route path through increases local services as capacity is released from the current lines
Midland Connect have a good overview of what it enables them to do – https://www.midlandsconnect.uk/media/1602/hs2-released-capac...
There’s also a document somewhere that covers how HS2 increases short distance services from Euston somewhere
Local rail transport should benefit hugely from HS2