I don't know the reason, but if you look on transfermarkt Haaland is part of the Rafaella Pimenta agency. I know she used to work for Raiola but now she has Haaland, Deligt, Pogba and others. She also represents Arnie Slot
Team Raiola seems to be separate and includes Donnarumma, Gravenberch, Bennacer, Stengs, Van Der Ven and others. Van DenVen's representative at Team Raiola is some bloke called Fernandez.
Who knows why this Team Raiola/Raffaela Pimenta thing happened but it's important not to underestimate the influence Mino Raiola had and the reputation he built up. With him no longer there I think there will be less manipulation and dirty tricks to move players on all the time.