You are just killing it. I would love to see you some of your animations content. I want to ask you.
Why did you choose those niches?
Are you targeting Tier 1 countries or tier three?
Why are you not creating vids like Kurzgesagt right away?
What software does Kurzgesagt use to create those videos?
Where to learn more about youtube seo (any suggestion)?
How did you finalize your niches?
Are you going to rely only on youtube advertisement?