I'm sure other people will chime in with corrections or further info...
In Magic Kingdom at WDW, the ones I know of that had
Lightning Lane were:
- Mickey in the Town Square Theater
- the Princesses in Princess Fairytale Hall
- Ariel at her Grotto
There are also characters in Pete's Silly Sideshow, but as far as I know, they did not have Lightning Lane
Other characters met outside and didn't have permanent lines
At EPCOT, there are none that I know of with Lightning Lane.
Some are in buildings in Imagination and the new Communicore Mickey's Friends area and may some ability to assist with
DAS. Anna & Elsa are in a building in Norway, but never had Lightning Lane.
The majority of characters are outside in the World Showcase Countries
At Disney Hollywood Studio, the Mickey and Minnie meets had Lightning Lane. I don't think the Olaf meet & greet did. I don't know of any others in buildings.
Characters the Star Wars, Toy Story and Pixar areas didn't have Lightning Lane.
At Animal Kingdom, there are none in building or that had Lightning Lane.