This is my on-going list of authors whose recent works I've enjoyed and seem to be AI-free.
Antiproton
aroslav
dotB
Duncan7 (StoryRoom)
Fick Suck
Harry Carton
Lumpy
QM
The Outsider (StoryRoom)
Note: This list is in an embryonic state and only contains the names of authors whose stories I've read in the past week or so. It represents my own personal opinion, which is worth exactly what you paid for it. And yes, there are plenty of very fine non-AI authors whose names are currently missing.