If a content creator had some episodic videos but make other content on the side, you best believe I'm going to their playlist to see if it's neatly compiled there. Having used to help manage an indie talent, I always made it a point to do that for some of the games she played since she tended to bounce between titles.
Now, whether or not that does something to nudge the needle one way or the other, it's harder to say for sure. Besides the niche subscribers who want to catch up on the specific content in your channel, I can't imagine it does a lot. It's more of a convenience thing than anything else.