Warning: some of this content may be offensive or unsuitable for children.
Several of these videos have multiple subtitle tracks, if you don't see Cantonese text, check to see if there is another subtitle track.
Note that some of the subtitles use odd/sloppy sound-a-like characters, some examples: 吾=唔，果=嗰，依=呢，地=哋，既=嘅，感=咁，岩=啱，黎=嚟，etc. Of course, this is mostly a problem with the non-standard nature of written Cantonese. Some videos are much better than others in this regard.
PM me if you find a video on this list that doesn't have spoken form Cantonese subtitles or the subs are really incomplete, I will remove it.
I highly recommend using a popup dictionary like Chrome's "Cantonese Popup Dictionary" extension with this content. Another option is to use the Reader tool at LanguageTools.io which supports Cantonese.
Also don't forget that in the standard YouTube settings (little gear icon) for any video you can set the speed to 75% to make it easier to understand.
Good luck with your Cantonese studies! less