I‘m not sure I understand what you’re suggesting.
If a recorded video has been processed and commercials have been detected, you should get on option to skip those (1 „Skip Ad“ button popping up, 1 click).
https://support.plex.tv/articles/115003944134-removing-commercials/
There’s currently no option to automatically skip ads… unless you configure Plex to remove the ads. There’s an existing feature suggestion asking for Plex to allow automatically skipping ads:
There’s also an existing suggestion asking for Plex to display a visual indicator for ads (or intro/credits) on the progress bar:
If that’s what you’re looking for, please comment/vote in those existing suggestions in order to help us avoid distracting or cannibalizing votes (closing this thread as a duplicate).
I’m not sure if that part of your suggestion is aiming at the same. I’m not aware of any apps listing actors above the video and progress bar?!?