How to let riders control mounted mobs?

I'm trying to use Artifacts and have created an item that uses the mount mechanic, but I can't figure out how to make the summoned mount-mob controllable by the rider. The exception to this is if I make the mount a horse that has the tamed and saddled options. But my goal is to make a wolf mount that players can control. I've tried to make the mob a horse first and then disguise it, but libsdisguises has an issue where disguised horses cannot be controlled.

Is there an AI setting or...

How to let riders control mounted mobs?