Regarding ranking ANYTHING in conjunction with YouTube videos, remember the golden trick: add this ANYTHING link to the video description, and if this ANYTHING is a webpage you can control, add this video to that webpage – embed it there and add the YouTube link anchored with your keyword.

This way, when you point backlinks (whether directly or using tiers) to your ANYTHING and to your video, you boost them from two sides, and thus they boost each other.

This means that when you rank a GMB map, place the link to it in the video description. When you rank a parasite page, you place the link to it in the video description, and you place your video on your parasite page.

YouTube video is perceived by Google as high-quality content, so having a video or even videos on your website/webpage improves its value and relevance.