Neither Piped, Invidious, LibreTube, nor NewPipe have this option:
- Invidious: https://github.com/iv-org/invidious/issues/2908#issuecomment-1046999164
- Piped doesn't have any issue about it
- LibreTube already uses Piped so
- NewPipe: https://github.com/TeamNewPipe/NewPipe/issues/1950
The only thing I found is an app called SkyTube that has a Deny List and an Allow List.