Question on speed farming old content

[Chingur]

Years ago I followed a guide on here for a speed farming character. I believe it was single minded fury using Azerite armor. I quit for a while, recently came back and leveled the warrior up and ruined my farmer.

I have a decent 11 warrior for timewalking. My question is, what level/class is good for old content currently? If somebody can point me in the right direction I would appreciate it.