Yeah, this one is a great list. But these people charge a lot & some of them stopped doing sponsored videos. We may try them out when we have a large community.
Maybe the bull run from 2020 to 2021 help them become millionaires and they are no longer want to do sponsored videso.
Thanks for your disclosure that you might contact owners of large channels when the Bitgesell community become big. It unofficially reveals that you have long term support and management for this campaign.
We will roll out an Article & Video Campaign later this week. Currently working on it. You should see some Bitcointalk banners soon!
I incidentally see your preparation for it and the coming promotion will be great for Bitgesell.