These are the best proven used factors to rank your videos on YouTube.

Best Top YouTube Videos Ranking Factors 2019

Average view duration for all videos on your channel

Top videos or channels listed by watch time

Audience retention data for a specific video for different time frames

Relative audience retention for a video compared to the YouTube average for similar videos

Video comments

Engagement in first 30 minutes

Subscribers – after watching a video

Video shares

Click-through rate

Thumbs up/Thumbs down

Watch time

Channel authority

Positive sentiment & engagement

Broad match keyword targeting across title, description, and keyword tags

Go with my YouTube Training session for more details.