All Artifact are using ATK%
Here's why all ATK% artifacts just doesnt work anymore after AR35+
At AR35+, your main dps should have at least about 1500-2000ish ATK
And the same thing goes even if you're already AR40+
So, let's just conclude that the ATK cap in this game is around 2000
That's why using only ATK% artifacts isnt worth it anymore because the scaling from the ATK has already maxed out.
And that is the time where other stat modifiers are needed, such as Crit Rate, Crit Damage, Elemental%, EM, etc. So, it's better invest on those artifacts in the long run.
As you can see from my previous video, • Jean DPS Anemo Crit Build + Royal Sword
my ATK is only about 1800, but its dealing more damage on average because of the Crit Rate and Anemo% than this only ATK% build.
If you're confused on which artifact you should use late game, prioritize the following:
1. Crit Rate
2. Crit DMG
3. ATK%/ATK (if it's pretty high, if not trash it)
4. Elemental Mastery
5. Elemental Recharge
6. DEF/HP