Looking for Info on Enemy Trainer EVs

I’m trying to Nuzlocke the game on Normal Mode, and after about 10 attempts I’ve finally reached the Elite Four. I really want to properly prepare for this but I have not been able to find anywhere that tells me specifically what EVs the Elite Four’s pokemon have. This makes it really hard to plan the fights since I can’t trust any of the calcs I’ve done.
Can anyone tell me if there’s a resource detailing the EV distributions of the Elite Four and Champion? (and ideally all story battles if possible?)