Superstar components do some nice ones
I got some nanotech flats from Superstar Components and they’re great with some nice scateboarding trainers from tkmaxx. I upgraded forks, stem, bars, rear shock, tyres, wheels in that order but that’s what me and my bike needed at the time.
Think what kind of riding you want to do and where your bike needs upgrades the most and take it from there would be my suggestion. I’ve found that upgrading major parts has made a much bigger difference than I thought and is definitely worth it.