Disney doesn't always make this available. However, usually different rides will be open After Hours. If you ask a cast member in the park, they'll be able to tell you which rides will be open or closed for AMH, just like they do for EMH
The post @NotTheBatesMotel noted is kept current with MK DAH open attraction info. MK DAH open attractions / characters has not tended to change much over time.
Small caveat that it doesn’t note any closures for refurbishments, if applicable.
Dreams Unlimited Travel is committed to providing you with the very best vacation planning experience possible. Our Vacation Planners are experts and will share their honest advice to help you have a magical vacation.