Have taken well over a hundred classes over the last 31 years of training. Have also shot an AK exclusively 99% of that time.
Sonny has the best class that specializes in the AK.
Most of the others are general rifle type classes somewhat adapted to the AK. A lot of trainers that talked smack about the AK "100 yard gun" and misc. BS started teaching "Ak" classes once the platform got really popular and guns and ammo was cheap years ago. Or they brought Sonny in for a class, took most of his stuff and then started offering "AK" specific classes right after that.
If you want to run your AK more efficiently, go to him. I had been running an AK 20 years by the point I started training with him, and I learned a lot. There is a ton of little nuances that really help with efficiency that most people miss.