The videos that helped my channel grow the most were the ones that solved a very specific problem, tutorials that answered a clear how to question consistently performed better than any other format, it wasn't about being entertaining or having high production value; it was about being the most useful resource on a topic people were actively searching for.
I also had a lot of success with comparison videos, content that answered which is better or A vs B attracted viewers who were close to making a decision, these videos got a lot of comments from people sharing their own experiences, which boosted engagement and signal to the algorithm, the key was to be brutally honest and not just shill one option over the other, what didn't work were the trendy, what I do in a day or general vlog style videos when I was small, those only worked once I had a larger audience that actually cared about my life, for a small channel, the content that grew me was always the content that helped a stranger solve a problem right now, not the content that tried to make them like me, the likes came later after they trusted me.